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Longer LK4 vs Longer LK4 PRO: 27 Highlights & 43 Differences — So, Which 3D Printer Actually Works Better

Both printers are great but serve different user needs. Pick ready-made ease or modular upgrades. We ran the full gadget test: Longer LK4 vs Longer LK4 PRO &#8212 from width, depth, height & weight to design smarts, here’s how they compare.

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Highlights 166

No extras. Just what matters.
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Why is Longer LK4 better than Longer LK4 PRO ?

Scroll down for more facts

Longer LK4 vs Longer LK4 Pro: A Comprehensive Comparison for Beginners and Tinkerers

When diving into the world of consumer-grade FDM 3D printing, two models from Longer stand out: the Longer LK4 and its counterpart, the Longer LK4 Pro. Both released in 2019, these printers cater primarily to beginners and intermediate users looking to engage in prototyping, miniatures, and engineering projects. Sharing fundamental features such as nearly identical build volumes around 738.5 cm³, 0.4mm nozzle sizes, Bowden extruder drives, and robust maximum extruder temperatures of 482°C, they share a common DNA. However, beneath these similarities are notable differences; from assembly type, filament compatibility, print speed nuances, to distinct safety feature implementations. These aspects can sway the right choice depending on your priorities.

A Ready-to-Print Marvel: The Longer LK4

The Longer LK4 excels in user friendliness thanks to its prebuilt design that requires only minor assembly steps. It aims to get beginners printing with minimal setup hurdles. Its slightly larger footprint of 1.74 sq ft, yet lighter weight around 15.4 lbs, makes it portable and easy to accommodate. A standout trait is its broad filament compatibility, supporting tricky industrial materials like Nylon, Carbon Fiber, and even Wood-infused filaments, alongside standard PLA and ABS, giving makers wide material freedom.

From a performance perspective, the LK4 operates with an official max speed of 120 mm/s and an effective real-world speed of 80 mm/s, offering a practical balance between speed and quality. Notably, it excels in bridging with a solid score of 50 compared to the Pro's 25, making it better at printing complex spans without support.

It features a glass build plate that is removable, simplifying post-processing and calibration. The 3.5" touchscreen interface aids intuitive control. Environmentally, LK4 adapts better to variable conditions with a wider operating humidity range of 20-80%. Lastly, it maintains quieter running levels, around 50 dB while printing, ideal for home or office.

With $199 at Longer3D.com, the LK4 targets those who want ready out-of-the-box printing versatility with fewer assembly demands.

The Build-It-Yourself Powerhouse: Longer LK4 Pro's Appeal

For users craving customization and advanced safety, the Longer LK4 Pro arrives as a more compact (17.32x15.75x18.5 inches), heavier, and kit-based 3D printer requiring full assembly. While this demands more initial effort, it addresses those comfortable with hands-on building and upgrades, featuring available add-ons like enclosure and camera kits.

Notably, it has fewer supported filaments, excluding Nylon and Carbon Fiber, limiting experimental material use somewhat, but it retains standard filaments such as PLA, ABS, and PETG. It offers an official top print speed of 180 mm/s, higher than the LK4's maximum, although effective print speeds tend to hover around 60 mm/s. Despite a slower effective print speed, it completes the benchmark Benchy print faster at 90 minutes compared to LK4's 120 minutes, possibly due to firmware or motion tuning.

One of the biggest distinctions is in safety: with six safety sensors integrated, the LK4 Pro far outpaces the LK4's basic two, including enhanced automatic shutdown protocols. This makes it especially suitable for educational or semi-professional settings demanding stringent safety and monitoring.

The LK4 Pro's operational noise is higher (60 dB printing), which might be a consideration if sound is a concern. It requires a larger workspace footprint (2.22 sq ft) and a higher maintenance frequency, with service intervals recommended every 250 hours versus 500 hours for the LK4.

Priced competitively at just $179.99 at Longer3D.com, the LK4 Pro appeals to enthusiasts wanting to tinker and integrate custom workflows.

Quick Take

The Longer LK4 is the go-to for beginners seeking a ready-to-use, quiet printer with expansive filament options like Nylon and Carbon Fiber, plus superior bridging capability for complex prints. Meanwhile, the LK4 Pro stands out with a robust safety sensor suite, kit assembly for hobbyists or educational use, and quicker benchy prints despite its lower effective speed.

Bottom Line

Ultimately, if you prefer an easier start with broad material flexibility and quieter operation, the Longer LK4 is the smarter pick. On the other hand, if you don't mind assembling your printer and want enhanced safety, upgrade paths, and slightly lower upfront costs, the LK4 Pro offers excellent value. Both models deliver solid printing capacity, but your choice hinges on ease of use versus customization and safety emphasis.

Verdict

  • Winner: Longer LK4 - Best for those seeking a reliable, beginner-friendly printer with a wide range of supported filaments and quieter operation.
  • Runner-up: Longer LK4 Pro - Ideal for users wanting a more compact kit printer with advanced safety features and upgrade options, suited for educational environments or tinkerers.

Comparisons 4

Two enter. One leaves your cart.

Price comparisons

(✱) Prices may be changed at any time without further notice.

Related comparisons 4

Because one duel is never enough.

Comparisons & Facts 166

Side by side. The numbers. The features. No drama.

We dove deep into Longer LK4 vs Longer LK4 PRO &#8212 every major spec, performance test, and design callout is here to help you pick the right 3d printer.

General Information 12

Model Number

What is the model number?

0 Longer LK4 0 Votes LK4

0 Longer LK4 PRO 0 Votes LK4 Pro

Longer LK4
vs
Longer LK4 PRO
Model Number

The Model Number is 'LK4' for Longer LK4 and 'LK4 Pro' for Longer LK4 Pro, signifying the Pro as an enhanced variant for professional needs.

Manufacturer’s reference code for precise identification.

Assembly Type

What is the assembly type?

0 Longer LK4 0 Votes Prebuilt

0 Longer LK4 PRO 0 Votes Kit

Longer LK4
vs
Longer LK4 PRO
Assembly Type

Assembly Type differs: Longer LK4 is Prebuilt, making it ready to use, while Longer LK4 Pro is a Kit requiring assembly, suited for users who want to build the printer themselves.

Shows whether the printer is sold as a kit requiring assembly or fully prebuilt.

Release Year

What is the release year?

0 Longer LK4 0 Votes 2019

0 Longer LK4 PRO 0 Votes 2019

Longer LK4 PRO
Longer LK4 PRO

The 2019 release year indicates that the Longer LK4 Pro is a more established 3D printer, benefiting from user feedback and potential firmware updates over time.

The year the 3D printer was first released.

Assembly Required

Is assembly required?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
Longer LK4

The printer requires some assembly, which typically involves attaching a few major components like the gantry to the base and wiring them up.

States if the printer requires assembly.

Upgrade Path

Does it support an upgrade path?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Upgrade Path

Both models offer an Upgrade Path, supporting future enhancements.

Whether the printer can be expanded with official or third-party upgrades.

Country of Origin

What is the country of origin?

0 Longer LK4 0 Votes China

0 Longer LK4 PRO 0 Votes China

Longer LK4
vs
Longer LK4 PRO
Country of Origin

Country of Origin is China for both printers.

The country where the product is designed or manufactured.

Warranty Period

What is the warranty period?

0 Longer LK4 0 Votes 1 Year

0 Longer LK4 PRO 0 Votes 1 Year

Coverage period offered by the manufacturer.

Product Name

What is the product name?

0 Longer LK4 0 Votes Longer LK4

0 Longer LK4 PRO 0 Votes Longer LK4 Pro

Longer LK4
Longer LK4

This specifies the official product name of the 3D printer.

Longer LK4 PRO
Longer LK4 PRO

The product is officially named the Longer LK4 Pro, identifying it within Longer's line of 3D printers and distinguishing it from previous models.

The commercial name of the 3D printer.

Printer Type

What type of printer is it?

0 Longer LK4 0 Votes FDM/FFF

0 Longer LK4 PRO 0 Votes FDM/FFF

Longer LK4
vs
Longer LK4 PRO
Printer Type

Both printers use the FDM/FFF Printer Type, suitable for similar 3D printing techniques.

Defines the printing technology used by the machine.

Intended Use

What is the intended use?

0 Longer LK4 0 Votes Consumer

0 Longer LK4 PRO 0 Votes Consumer, Educational

Longer LK4
Longer LK4

This printer is primarily designed for the consumer market, indicating it is user-friendly and suitable for home use or hobbyists.

Identifies the main user category.

Supported Applications

What applications are supported?

0 Longer LK4 0 Votes Prototyping, Miniatures, Engineering

0 Longer LK4 PRO 0 Votes Prototyping, Miniatures, Engineering

Longer LK4
vs
Longer LK4 PRO
Supported Applications

Supported Applications are identical: Prototyping, Miniatures, and Engineering for both Longer LK4 and Longer LK4 Pro.

Lists the most common applications supported.

Target User Level

What is the target user level?

0 Longer LK4 0 Votes Beginner, Intermediate

0 Longer LK4 PRO 0 Votes Beginner

Longer LK4
Longer LK4

The Longer LK4 is suitable for both Beginner users looking to get started with 3D printing and Intermediate users seeking more advanced features and print quality.

Indicates the recommended skill level.

Dimensions & Weight 13

Width

What is the printer’s width?

18.9 inch 0 Votes
17.32 inch 0 Votes

Longer LK4
Longer LK4

The overall width of the printer is 18.9 inch (approximately 48.01 cm).

Longer LK4 PRO
Longer LK4 PRO

The printer has a width of 17.32 inch (44 cm), which is important for planning its placement on a desk or workbench.

The total external width of the printer.

Height

What is the printer’s height?

20.5 inch 0 Votes
18.5 inch 0 Votes

Longer LK4
Longer LK4

The overall height of the printer is 20.5 inch (approximately 52.07 cm).

Longer LK4 PRO
Longer LK4 PRO

With a height of 18.5 inch (46.99 cm), the printer has a vertical footprint that should be considered for placement on shelves or under cabinets.

The total external height of the printer.

Weight

What is the printer’s weight?

15.4 lbs 0 Votes
17.2 lbs 0 Votes

Longer LK4
vs
Longer LK4 PRO
Weight

Weight differs with Longer LK4 at 15.4 lbs and Longer LK4 Pro heavier at 17.2 lbs, which may affect portability considerations.

Net weight of the printer.

Package Weight

What is the package weight?

17.6 lbs 0 Votes
21.61 lbs 0 Votes

Longer LK4
vs
Longer LK4 PRO
Package Weight

Package Weight is 17.6 lbs for Longer LK4 and heavier at 21.61 lbs for Longer LK4 Pro, reflecting its heavier build.

total shipping weight including packaging.

Depth

What is the printer’s depth?

17.7 inch 0 Votes
15.75 inch 0 Votes

Longer LK4
vs
Longer LK4 PRO
Depth

Depth is 17.7 inches for Longer LK4 versus 15.75 inches for Longer LK4 Pro, making the Pro slimmer.

The total external depth of the printer.

Space Requirement

What is the space requirement?

1.74 sq ft 0 Votes
2.22 sq ft 0 Votes

The minimum flat surface area needed to safely place the printer.

Package Width

What is the package width?

21.7 inch 0 Votes
18.5 inch 0 Votes

Longer LK4
Longer LK4

The width of the package is 21.7 inch (approximately 55.12 cm).

Longer LK4 PRO
Longer LK4 PRO

The package width of 18.5 inch (46.99 cm) helps in estimating the space required for shipping and initial setup.

Width of the printer’s packaging.

Package Depth

What is the package depth?

20.1 inch 0 Votes
19.69 inch 0 Votes

Longer LK4
vs
Longer LK4 PRO
Package Depth

Package Depth is 20.1 inches for Longer LK4 and slightly larger at 19.69 inches for Longer LK4 Pro, roughly similar packaging depth.

Depth of the printer’s packaging.

Package Height

What is the package height?

9.8 inch 0 Votes
9.06 inch 0 Votes

Longer LK4
vs
Longer LK4 PRO
Package Height

Package Height is 9.8 inches for Longer LK4 and 9.06 inches for Longer LK4 Pro, making the Pro's packaging a bit shorter.

Height of the printer’s packaging.

Build-to-Printer Size Ratio

What is the build-to-printer size ratio?

31 % 1 Votes
11.76 % 0 Votes

Longer LK4
vs
Longer LK4 PRO
Build-to-Printer Size Ratio

Build-to-Printer Size Ratio shows 31% for Longer LK4 and only 11.76% for Longer LK4 Pro, indicating the Pro has a more compact printable volume relative to its size.

The efficiency ratio of build volume relative to the overall printer size.

Looks like the Longer LK4 takes up less space overall which is nice for smaller work areas.

See more

Folded Width

What is the folded width?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Width of the printer when folded (if applicable).

Folded Depth

What is the folded depth?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Depth of the printer when folded.

Environmental & Power 9

Power Consumption

What is the power consumption?

350 Watt 0 Votes
280 Watt 1 Votes

Longer LK4
vs
Longer LK4 PRO
Power Consumption

Power Consumption is higher for Longer LK4 at 350 Watts versus 280 Watts for Longer LK4 Pro, making the Pro more energy efficient.

Average power usage during active printing.

The power consumption is lower on the LK4 Pro which might save energy and money long term.

See more

Operating Temperature Range

What is the operating temperature range?

0 Longer LK4 0 Votes 46.4-104°F

0 Longer LK4 PRO 0 Votes 59-86°F

Longer LK4
Longer LK4

The recommended operating ambient temperature for the printer is between 46.4-104°F (approximately 8-40°C).

Recommended ambient temperature range for safe operation.

Operating Humidity Range

What is the operating humidity range?

0 Longer LK4 0 Votes 20-80%

0 Longer LK4 PRO 0 Votes 20-50%

Longer LK4
Longer LK4

The printer should operate within a relative humidity range of 20-80% to ensure optimal performance and prevent issues like filament moisture absorption.

Acceptable humidity range during printer operation.

Power Supply Type

What type of power supply does it use?

0 Longer LK4 0 Votes Internal

0 Longer LK4 PRO 0 Votes Internal

Longer LK4
vs
Longer LK4 PRO
Power Supply Type

Both use an Internal Power Supply Type.

Indicates whether the printer uses an internal or external power supply.

Power Supply Voltage

What is the required power supply voltage?

0 Longer LK4 0 Votes 100-240 Volt

0 Longer LK4 PRO 0 Votes 100-240 Volt

Longer LK4
Longer LK4

The printer's power supply supports a universal voltage range of 100-240 Volt, allowing it to be used in various regions worldwide with different electrical standards.

Voltage input supported by the printer’s power supply.

Storage Temperature Range

What is the storage temperature range?

0 Longer LK4 0 Votes 50-104°F

0 Longer LK4 PRO 0 Votes 32-104°F

Longer LK4
vs
Longer LK4 PRO
Storage Temperature Range

Storage Temperature Range spans 50-104°F for Longer LK4 but is broader at 32-104°F for Longer LK4 Pro, advantageous for colder storage conditions.

Safe temperature range for storing the printer when not in use.

Storage Humidity Range

What is the storage humidity range?

0 Longer LK4 0 Votes 50-104°F

0 Longer LK4 PRO 0 Votes 10-90%

Safe humidity range for storing the printer.

Idle Power Consumption

What is the idle power consumption?

10 Watt 0 Votes
10 Watt 0 Votes

Power drawn while the printer is on but not printing.

Energy Saving Mode

Does it have energy saving mode?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Whether the printer includes an energy-saving or eco mode.

Build Specifications 21

Filament Diameter Supported

What filament diameter is supported?

1.75 mm 0 Votes
1.75 mm 0 Votes

Longer LK4
vs
Longer LK4 PRO
Filament Diameter Supported

Filament Diameter Supported is 1.75 mm for both.

The filament size compatible with printer.

Build Height

What is the build height?

9.8 inch 0 Votes
9.84 inch 0 Votes

Longer LK4
Longer LK4

The maximum height of the printable area is 9.8 inch (approximately 24.89 cm).

Longer LK4 PRO
Longer LK4 PRO

The build height of 9.84 inch (25 cm) allows for printing taller objects, expanding the range of possible projects compared to printers with smaller vertical build volumes.

Maximum printable height of the build area.

Layer Resolution Maximum

What is the maximum layer resolution?

400 microns 0 Votes
400 microns 0 Votes

Longer LK4
vs
Longer LK4 PRO
Layer Resolution Maximum

Layer Resolution Maximum is 400 microns on both models.

Thickest layer height achievable.

Standard Nozzle Diameter

What is the standard nozzle diameter?

0.4 mm 0 Votes
0.4 mm 0 Votes

Longer LK4
Longer LK4

The printer comes with a standard nozzle diameter of 0.4 mm, which is the most common size for FDM printers, offering a good balance between speed and detail.

Longer LK4 PRO
Longer LK4 PRO

The 0.4 mm standard nozzle diameter is a versatile size, offering a good balance between print speed and detail for most common FDM printing tasks.

Default nozzle diameter provided.

Build Width

What is the build width?

8.7 inch 0 Votes
8.66 inch 0 Votes

Longer LK4
vs
Longer LK4 PRO
Build Width

Build Width is nearly the same, 8.7 inches for Longer LK4 and 8.66 inches for Longer LK4 Pro, offering similar horizontal print area.

Maximum printable width of the build area.

Build Depth

What is the build depth?

8.7 inch 0 Votes
8.66 inch 0 Votes

Longer LK4
vs
Longer LK4 PRO
Build Depth

Build Depth matches closely: 8.7 inches for LK4 and 8.66 inches for LK4 Pro, so print depth capability is almost identical.

Maximum printable depth of the build area.

Build Volume

What is the build volume?

738.4 cubic in 0 Votes
738.56 cubic in 0 Votes

Longer LK4
Longer LK4

The total build volume is 738.4 cubic in (approximately 12.10 liters). This corresponds to a print area of 220mm x 220mm x 250mm, which is a common size for consumer FDM printers.

total printable volume capacity.

Layer Resolution Minimum

What is the minimum layer resolution?

100 microns 0 Votes
100 microns 0 Votes

Longer LK4
vs
Longer LK4 PRO
Layer Resolution Minimum

Layer Resolution Minimum is 100 microns for both printers, supporting similar print detail.

Finest layer height achievable.

Optional Nozzle Sizes

What optional nozzle sizes are supported?

0 Longer LK4 0 Votes 0.2mm, 0.6mm, 0.8mm

0 Longer LK4 PRO 0 Votes 0.2mm, 0.4mm, 0.6mm, 0.8mm

Longer LK4
Longer LK4

The printer supports various optional nozzle sizes, including 0.2mm for very fine details, and 0.6mm and 0.8mm for faster printing and larger layer heights.

Alternative nozzle sizes supported.

Max Bed Temperature

What is the max bed temperature?

212 °F 0 Votes
212 °F 0 Votes

Longer LK4
vs
Longer LK4 PRO
Max Bed Temperature

Max Bed Temperature is 212°F on both printers.

Maximum heated bed temperature.

Extruder Drive Type

What type of extruder drive does it use?

0 Longer LK4 0 Votes Bowden

0 Longer LK4 PRO 0 Votes Bowden

Longer LK4 PRO
Longer LK4 PRO

The Bowden extruder drive type positions the motor remotely from the hotend, reducing weight on the print head for faster movements and minimizing ghosting, though it can make printing flexible filaments more challenging.

The type of filament feeding system.

Bed Temperature Gradient

What is the bed temperature gradient?

9 °F 1 Votes
5 °F 0 Votes

Longer LK4
vs
Longer LK4 PRO
Bed Temperature Gradient

Bed Temperature Gradient is 9°F for LK4 and lower at 5°F for LK4 Pro, meaning the Pro maintains a more even bed temperature.

Variance in heat across the bed surface.

The LK4 has a higher bed temperature gradient though the Pro's lower number might offer better control.

See more

Materials & Compatibility 13

Supported Filament Types

What filament types are supported?

0 Longer LK4 0 Votes PLA, ABS, PETG, Nylon, TPU, Carbon Fiber, HIPS, Wood

0 Longer LK4 PRO 0 Votes PLA, ABS, PETG, TPU, Wood

Longer LK4
vs
Longer LK4 PRO
Supported Filament Types

Supported Filament Types differ: LK4 supports PLA, ABS, PETG, Nylon, TPU, Carbon Fiber, HIPS, Wood, while LK4 Pro supports PLA, ABS, PETG, TPU, Wood, with LK4 covering more specialty filaments.

Filament materials that the printer can process.

Max Supported Filament Diameter

What is the maximum supported filament diameter?

1.75 mm 0 Votes
1.75 mm 0 Votes

Maximum filament diameter that can be used.

Filament Dry Box

Does it support filament dry boxes?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Supports use of a dry box to prevent filament moisture issues.

Filament Auto-Loading

Does it have filament auto-loading?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Automatic feeding of filament into extruder.

Filament Drying Required

Is filament drying required?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Whether drying filament before use is necessary.

Multi-Material Printing

Can it print with multiple materials?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Ability to print with multiple materials simultaneously.

Max Number of Materials Supported

What is the maximum number of materials supported?

0 Longer LK4 0 Votes 1

0 Longer LK4 PRO 0 Votes 1

Longer LK4
vs
Longer LK4 PRO
Max Number of Materials Supported

Max Number of Materials Supported is 1 on both printers.

Maximum distinct materials supported in one job.

Third-Party Material

Does it support third-party materials?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Third-Party Material

Both are compatible with Third-Party Material.

Ability to use non-proprietary materials.

Supported Resin Types

What resin types are supported?

0 Longer LK4 0 Votes None

0 Longer LK4 PRO 0 Votes None

Resin types that the printer can use.

Compatible Resin Wavelength

What resin wavelength is compatible?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Light wavelength compatibility for curing resins.

Max Resin Tank Capacity

What is the maximum resin tank capacity?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Maximum amount of resin the tank can hold.

Resin Auto-Fill

Does it have resin auto-fill?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Automatic filling of resin during prints.

Hardware Features 20

Touchscreen Display

Does it have a touchscreen display?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Touchscreen Display

Touchscreen Display is included on both printers.

Indicates if a touchscreen is provided for controls.

Build Plate Type

What type of build plate does it have?

0 Longer LK4 0 Votes Glass

0 Longer LK4 PRO 0 Votes Glass

Longer LK4 PRO
Longer LK4 PRO

The Glass build plate provides a very smooth first layer finish and can be easily cleaned, though adhesion may require additional adhesives for some materials.

Type of build surface material.

Filament Runout Sensor

Does it have a filament runout sensor?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4 PRO
Longer LK4 PRO

A filament runout sensor is included, which pauses the print job when the filament spool runs empty, preventing air prints and allowing the user to load new filament to continue the print.

Detects when filament runs out and pauses printing.

Enclosure

Is the printer open or enclosed?

0 Longer LK4 0 Votes Open

0 Longer LK4 PRO 0 Votes Open

Whether the printer has an open or enclosed build chamber.

Build Plate Removable

Is the build plate removable?

Yes 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Whether the build plate can be detached for print removal.

Frame Type

What is the frame type?

0 Longer LK4 1 Votes Cartesian

0 Longer LK4 PRO 0 Votes Cartesian

Longer LK4 PRO
Longer LK4 PRO

The Cartesian frame type, similar to the Prusa i3, uses X, Y, and Z axes to move the print head and bed independently, providing a widely understood and reliable motion system.

Mechanical structure style of the printer.

Both have a Cartesian frame type giving a similar kind of stability during printing.

See more

Power Loss Recovery

Does it support power loss recovery?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Power Loss Recovery

Power Loss Recovery is supported by both.

Recovers print jobs after power interruptions.

Air Filtration

What type of air filtration is included?

0 Longer LK4 0 Votes None

0 Longer LK4 PRO 0 Votes None

Air filtering system for reducing fumes and particulates.

Screen Resolution

What is the display resolution?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Resolution of the display screen.

Screen Size

What is the display screen size?

3.5 Inch 0 Votes
3.5 Inch 0 Votes

Size of the display screen.

Built-in Camera

Does it have a built-in camera?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Camera for monitoring prints and creating time-lapses.

Lighting Inside Chamber

Does it have chamber lighting?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Chamber lighting to monitor prints in progress.

Connectivity & Software 13

Connectivity Options

What connectivity options are available?

0 Longer LK4 0 Votes USB

0 Longer LK4 PRO 0 Votes USB

Longer LK4
vs
Longer LK4 PRO
Connectivity Options

Connectivity Options are USB for both.

Available connection types for file transfer and control.

File Transfer Method

What file transfer methods are supported?

0 Longer LK4 0 Votes USB, SD Card

0 Longer LK4 PRO 0 Votes USB, SD Card

Longer LK4 PRO
Longer LK4 PRO

The printer supports file transfer via USB and SD Card, offering convenient options for loading print jobs without requiring a constant network connection.

Methods available to transfer files to the printer.

Supported File Formats

What file formats are supported?

0 Longer LK4 0 Votes STL, OBJ, G-code

0 Longer LK4 PRO 0 Votes STL, OBJ, G-code

Longer LK4
vs
Longer LK4 PRO
Supported File Formats

Supported File Formats are STL, OBJ, and G-code for both.

File types accepted for printing.

Remote Monitoring

Does it support remote monitoring?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Ability to monitor prints remotely via app or web.

Cloud-Based Software

Does it support cloud-based software?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Indicates whether the printer uses or supports cloud software.

Proprietary Software Required

Is proprietary software required?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Whether use of manufacturer’s software is mandatory.

Supported Slicers

Which slicers are supported?

0 Longer LK4 0 Votes Cura, PrusaSlicer

0 Longer LK4 PRO 0 Votes Cura, Simplify3D

Slicer programs that are compatible with the printer.

Mobile App

Does it support a mobile app?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Ability to use a mobile app for control/monitoring.

API/SDK Integration

Does it support API/SDK integration?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Allows developers to integrate with APIs or SDKs.

Multi-Printer Fleet Control

Does it support multi-printer fleet control?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Enables managing multiple printers simultaneously.

Time-Lapse Recording

Does it support time-lapse recording?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Ability to capture time-lapse videos of prints.

Firmware Update

Does the printer support firmware updates?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Firmware Update

Firmware Update is available for both.

Indicates whether the printer supports firmware updates; important for new features and bug fixes.

Resin Workflow 10

UV Light Source Type

What UV light source type does it use?

0 Longer LK4 0 Votes None

0 Longer LK4 PRO 0 Votes None

Longer LK4 PRO
Longer LK4 PRO

As an FDM printer, the Longer LK4 Pro uses no UV Light Source Type, as it melts plastic filament rather than curing liquid resin with UV light.

Type of UV light source used to cure resin layers.

UV Power Output

What is the UV power output?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Strength of UV light exposure affecting curing speed and accuracy.

Resin Layer Curing Speed

What is the resin layer curing speed?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Time required to cure one resin layer.

Resin Tank Lifetime

What is the resin tank lifetime?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Approximate number of prints before resin tank replacement.

Resin Cartridge System

Does it use a resin cartridge system?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Whether it uses a sealed resin cartridge system for easy handling.

Auto Resin Mixing

Does it have auto resin mixing?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Whether resin is automatically mixed during operation for consistency.

Resin Heating System

Does it have a resin heating system?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Whether the printer can heat resin for optimal viscosity.

Wash Time

What is the wash time?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Typical duration to wash prints in post-processing.

Cure Time

What is the cure time?

Who knows? 0 Votes Longer LK4 (Help us out by suggesting one!)

Who knows? 0 Votes Longer LK4 PRO (Help us out by suggesting one!)

Typical duration to fully cure resin prints after washing.

Post-Processing Equipment Compatibility

Is it compatible with post-processing equipment?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Whether the printer supports integration with wash/cure stations.

Safety & Compliance 10

Safety Certifications

What safety certifications does it have?

0 Longer LK4 0 Votes CE, FCC

0 Longer LK4 PRO 0 Votes CE, FCC

Longer LK4
vs
Longer LK4 PRO
Safety Certifications

Safety Certifications include CE and FCC for both.

Official safety standards the printer complies with.

Emergency Stop Button

Does it have an emergency stop button?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Dedicated button to stop the printer instantly in emergencies.

Safety Sensors Count

How many safety sensors are included?

0 Longer LK4 0 Votes 2

0 Longer LK4 PRO 0 Votes 6

Longer LK4
vs
Longer LK4 PRO
Safety Sensors Count

Safety Sensors Count is 2 for LK4 and more advanced at 6 for LK4 Pro, adding safety benefits.

Number of safety sensors installed in the printer.

Enclosure Lock

Does it have an enclosure lock?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Prevents accidental access to the chamber while printing.

Fireproof Build Plate

Does it have a fireproof build plate?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Build plate is resistant to fire for extra safety.

Overheat Protection

Does it feature overheat protection?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Overheat Protection

Overheat Protection is supported on both printers.

Shuts down printer when components exceed safe temps.

Auto Shutdown on Error

Does it auto shut down on errors?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Auto Shutdown on Error

Auto Shutdown on Error is available on both.

Shuts printer down automatically when critical errors occur.

Resin Spill Protection

Does it have resin spill protection?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Prevents or contains resin leaks in resin printers.

Child Lock Mode

Does it have a child lock mode?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

A setting that prevents unauthorized or unsafe use by children.

Air Quality Compliance

Is it compliant with air quality standards?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Meets air quality standards for emissions and filtration.

Maintenance & Upgrades 10

Upgrade Options

What upgrade options are supported?

0 Longer LK4 0 Votes None

0 Longer LK4 PRO 0 Votes Enclosure, Camera

Supported upgrade kits and modules for expanding functionality.

Service Interval

What is the service interval?

500 hours 0 Votes
250 hours 0 Votes

Longer LK4
vs
Longer LK4 PRO
Service Interval

Service Interval is 500 hours for LK4 and shorter at 250 hours for LK4 Pro, implying more frequent servicing for the Pro.

Recommended time between major servicing.

Nozzle Replaceable

Is the nozzle replaceable?

Yes 0 Votes Longer LK4

Yes 1 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Nozzle Replaceable

Nozzle Replaceable feature is available on both.

Specifies if the nozzle can be replaced with different sizes or when worn.

Both models have replaceable nozzles but the LK4 Pro supports upgrade options which is cool.

See more

Spare Parts Availability

Are spare parts available?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Spare Parts Availability

Spare Parts Availability is confirmed for both.

Whether spare parts are readily available for purchase.

Supported Mod Kits

What mod kits are supported?

0 Longer LK4 0 Votes None

0 Longer LK4 PRO 0 Votes Enclosure

Longer LK4
vs
Longer LK4 PRO
Supported Mod Kits

Supported Mod Kits are none for LK4 and Enclosure for LK4 Pro.

Officially supported modification kits.

Self-Diagnostics

Does it have self-diagnostics?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Printer can analyze itself for common faults and errors.

Maintenance Reminders

Does it provide maintenance reminders?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Automated alerts to schedule maintenance tasks.

Predictive Maintenance Alerts

Does it feature predictive maintenance alerts?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Predicts potential failures and alerts the user before issues arise.

Tool-Free Maintenance

Is tool-free maintenance supported?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Allows key maintenance tasks without tools.

Lubrication Required

Does it require lubrication?

Yes 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Lubrication Required

Lubrication Required is Yes for both.

Indicates if lubrication is needed for smooth operation.

Business & Professional Features 10

Cloud Fleet Management

Does it support cloud fleet management?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Ability to manage multiple devices remotely via cloud software.

Workflow Integration

Does it integrate with workflows?

No 0 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Workflow Integration

Workflow Integration is not available for LK4 but supported on LK4 Pro, aiding business usage.

Integration with professional workflow tools and design platforms.

Multi-User Profiles

Does it support multi-user profiles?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Allows multiple users to have distinct profiles and permissions.

Remote Access Control

Does it support remote access control?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Ability to control printer access remotely with permissions.

Enterprise Security Features

Does it have enterprise security features?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Advanced security measures like encryption, secure login, and permissions.

Licensing Options

Are licensing options available?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Availability of enterprise licensing for organizations.

Usage Analytics Dashboard

Does it include a usage analytics dashboard?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Provides usage statistics and analytics for tracking productivity and costs.

SLA & Support Contracts

Are SLA or support contracts available?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Option for service-level agreements and premium support contracts.

Predictive Cost Estimation

Does it have predictive cost estimation?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Estimates printing costs (material, power, time) before job start.

Enterprise Monitoring & Sensors 10

Bed Temperature Sensors

Does it have bed temperature sensors?

Yes 1 Votes Longer LK4

Yes 0 Votes Longer LK4 PRO

Longer LK4
vs
Longer LK4 PRO
Bed Temperature Sensors

Both include Bed Temperature Sensors.

Detects and regulates the build plate temperature.

Both printers feature bed temperature sensors which is great for maintaining print adhesion.

See more

Vibration Sensor

Does it include a vibration sensor?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Detects vibrations and compensates for print accuracy.

Remote Error Alerts

Does it provide remote error alerts?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Sends error notifications to remote devices.

Predictive Failure Logs

Does it support predictive failure logs?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Tracks and predicts potential failures before they occur.

Calibration History Log

Does it have a calibration history log?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Stores history of calibration for quality control.

Sensor Count

How many sensors are included?

0 Longer LK4 0 Votes 2

0 Longer LK4 PRO 0 Votes 6

Longer LK4
vs
Longer LK4 PRO
Sensor Count

Sensor Count is 2 on LK4 and higher at 6 on LK4 Pro, enhancing monitoring capabilities.

total number of sensors installed in the printer.

Chamber Temperature Sensors

Does it have chamber temperature sensors?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Tracks and maintains chamber temperature for consistent prints.

Filament Jam Detection

Does it support filament jam detection?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Detects blockages or jams in the filament path.

Extruder Pressure Sensor

Does it have an extruder pressure sensor?

No 0 Votes Longer LK4

No 0 Votes Longer LK4 PRO

Monitors extrusion pressure to prevent under- or over-extrusion.

Surveys

Because hot takes deserve votes.

Printing Speed

How would you rate the printing speed of this 3D printer?

Lightning fast — Under 2 hours
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Very fast — 2 to 5 hours
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Fast — 5 to 10 hours
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Moderate speed — 10 to 20 hours
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Very slow — Over 20 hours
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Print Quality and Detail

How would you describe the print quality and level of detail produced by this 3D printer?

Ultra fine detail — Layer height below 0.05 mm
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Fine detail — Layer height 0.05 to 0.1 mm
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Good detail — Layer height 0.1 to 0.2 mm
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Decent detail — Layer height 0.2 to 0.3 mm
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Rough and basic — Layer height above 0.3 mm
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Build Volume Capacity

How do you find the build volume capacity of this 3D printer?

Extra large projects — Over 400 mm each side
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Large projects — 300 to 400 mm each side
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Medium projects — 200 to 300 mm each side
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Small projects — 150 to 200 mm each side
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Tiny prints only — Under 150 x 150 x 150 mm
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Material Consumption Efficiency

How efficient is this 3D printer in using filament or resin materials?

Very efficient — Under 50 grams per model
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Efficient — 50 to 70 grams per model
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Decent efficiency — 70 to 100 grams per model
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Average efficiency — 100 to 150 grams per model
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Wasteful — Over 150 grams per model
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Noise Level

How noisy is this 3D printer during operation?

Whisper quiet
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Quiet most of the time
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Manageable with background noise
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Noticeable but tolerable
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Loud and distracting
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Durability and Lifespan

How durable does this 3D printer seem in terms of lifespan?

Very durable — Over 5 years
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Long lasting — 3 to 5 years
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Decent lifespan — 2 to 3 years
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Short lifespan — 1 to 2 years
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Breaks down quickly — Under 1 year
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Performance

How would you rate the overall performance of this 3D printer in terms of print quality and reliability?

Excellent — Consistently produces high-quality prints with no issues
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Good — Produces quality prints with minor inconsistencies
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Average — Prints are acceptable with occasional issues
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Below average — Frequent print failures or inconsistencies
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Poor — Often fails to produce quality prints
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Ease of Setup

How easy was the setup process for this 3D printer?

Very easy — The printer was simple to set up with clear instructions and minimal effort
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Easy — Setup was straightforward, with only a few minor adjustments needed
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Average — Setup was manageable but took time and required some troubleshooting
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Challenging — Setup was difficult and required assistance from support or additional resources
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Very difficult — Setup was complicated, with unclear instructions and many issues during the process
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Pricing

How would you rate the pricing for this 3D printer?

Great value for money — Offers excellent features and performance at an affordable price
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Pretty good price — Decent pricing for the features, a reasonable value
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Fair deal — The price is acceptable but might be slightly high for the features offered
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Kinda pricey — The price feels a bit high compared to similar models
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Crazy expensive — The price is significantly higher than other options with similar features
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Design Appeal

How would you rate the design appeal of this 3D printer?

Excellent — Sleek, modern design that looks great in any workspace
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Good — Attractive and functional design that fits well in most environments
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Average — Standard design with no particular standout features
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Fair — Design feels bulky or outdated, but still serves its purpose
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO
Poor — Unattractive design, clunky and may be an eyesore in most spaces
0 Votes
Longer LK4
0 Votes
Longer LK4 PRO

Guides 2

Files 1

Longer LK4 3D Printer User Manual

google.com
google.com

Files 1

Longer LK4 PRO 3D Printer User Manual

google.com
google.com

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