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Longer returned to the FDM printer market on April 7, 2026 with the LK10 and larger LK10 Plus. The standard model is listed at $299.99 and combines a 225 x 225 x 265 mm build volume with a maximum speed of 500 mm/s, high-flow direct-drive extrusion and non-contact automatic bed leveling. It is a major specification upgrade over Longer’s older open Cartesian machines, although comprehensive independent testing remains limited.
The LK10 keeps the familiar moving-bed architecture rather than adopting a CoreXY enclosure. Most of the modernization is in the components: a Klipper-compatible control platform, motion sensors, eddy-current bed scanning, dual Z drive, a PEI plate and a 4.3-inch touchscreen. The LK10 Plus applies the same basic concept to a much larger 320 x 320 x 400 mm volume.
Familiar architecture, thoroughly updated hardware
The standard LK10’s 225 x 225 x 265 mm build volume suits figures, household objects and ordinary functional parts. Its open frame also keeps access simple. The moving bed needs clear space in front and behind, and the lack of an enclosure makes the printer better suited to PLA, PETG and TPU than to materials that shrink in drafts.
The LK10 Plus is the more direct successor to the LK5 Pro. Its 320 x 320 x 400 mm volume can accommodate helmets, tall display pieces and larger batches. That scale is attractive for $419.99, but a 320 mm moving bed is also heavier and more demanding at high acceleration. The Plus therefore deserves particular scrutiny in independent vibration and first-layer tests.
Key specifications
- Maximum speed of 500 mm/s: Longer also advertises acceleration up to 10,000 mm/s². Everyday quality speeds will depend on the model, filament and tuned profiles.
- Klipper-compatible high-speed board: 8 GB of onboard storage and X/Y motion sensors are intended to support input-shaping calibration and fast movement.
- High-flow direct-drive extruder: a 9.5:1 reduction ratio and hardened gears support a claimed maximum flow of 25 mm³/s, with a short path for flexible filament.
- Eddy-current automatic leveling: the non-contact sensor scans the metal build plate in lines and applies Z compensation during printing.
- Revised hotend and cooling: a copper-titanium bimetal heatbreak and 5015 fan are intended to reduce heat creep and maintain flow during longer jobs.
- Quality-of-life features: filament runout detection, semi-automatic belt tensioning, contactless X/Y homing and a 4.3-inch color touchscreen.
The 500 mm/s headline should be read as a mechanical maximum rather than a default quality profile. The hotend’s 25 mm³/s flow limit will often become the practical ceiling first. For example, a 0.4 mm line at 0.2 mm layer height reaches 25 mm³/s at roughly 312 mm/s before accounting for filament and temperature variation.
Specification sheet
| Specification | Announced value |
|---|---|
| Printer type | Open Cartesian FDM printer |
| Build volume | 225 x 225 x 265 mm |
| Maximum speed | 500 mm/s |
| Maximum acceleration | 10,000 mm/s² |
| Extrusion | Direct drive, 9.5:1 reduction |
| Maximum flow | 25 mm³/s |
| Bed leveling | Non-contact eddy-current scanning |
| Build plate | Flexible PEI-coated plate |
| Display | 4.3-inch color touchscreen |
| Control board | Klipper-compatible, 8 GB storage |
| Motion calibration | X/Y motion sensors |
| Filament monitoring | Runout detection |
| Large-format version | LK10 Plus, 320 x 320 x 400 mm |
Price and model choice
Longer’s store listed the LK10 at $299.99, against a displayed regular price of $399.99, when this article was verified. The LK10 Plus was $419.99, against $549.99. Both pages described the machines as in stock, but availability, tax and delivery conditions vary by region.
The standard LK10 is the more sensible choice for ordinary desktop projects and should be easier to accelerate cleanly because its bed is smaller. The Plus makes sense when its extra 95 mm of width, 95 mm of depth and 135 mm of height will prevent models from being split. Buying the larger machine only for occasional small prints adds footprint and moving mass without using its main advantage.
Firmware and practical questions
The Klipper-compatible board is one of the LK10 series’ most interesting features. Klipper can provide input shaping, pressure advance, macros and network-based control, but manufacturers sometimes ship customized interfaces or firmware branches that do not expose every upstream function. Longer promotes the high-speed board and motion sensors, but buyers who want deep configuration access should verify the current firmware documentation and update policy.
Eddy-current leveling is similarly promising. It can gather a dense bed mesh quickly without repeatedly touching the plate. Its accuracy still depends on correct calibration, temperature compensation and the conductive build surface. The technology is capable, but it does not remove the need for sound mechanical alignment or a clean nozzle.
As of this update, detailed hands-on coverage from established independent 3D-printer reviewers is still scarce. Most available information traces back to Longer or to early overview articles. Claims about noise, sustained high-speed quality and large-bed consistency should therefore remain provisional until production machines accumulate more testing hours.
Is the Longer LK10 worth considering?
On specifications and price, the LK10 is a substantial modernization of Longer’s FDM range. Direct drive, automatic leveling, motion calibration and a current high-speed control platform address the main weaknesses of the older LK machines. The standard model’s $299.99 price is particularly competitive, while the Plus offers a lot of physical print volume for $419.99.
The unanswered question is execution. Profile quality, firmware openness, fan noise, first-layer consistency and actual output at sustained speed have not yet been established by enough independent testing. The LK10 is worth watching and may prove strong value, but buyers who prioritize a proven workflow over headline specifications should wait for more complete reviews before ordering.
