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Vertex 3d printer


Velleman K8400: Vertex 3D Printer Kit

Velleman K8400

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The Velleman K8400 Vertex 3D Printer Kit

The Velleman Vertex K8400 Three Dimensional (3D) printer is the next generation Velleman 3D printer kit. Easy, accurate, affordable and open source. The K8400 is easy-to-assemble and offers features that rival those of printers that cost up to three times as more!


K8400 Standard Print Features

Create precise 3D prints with 1.75mm filament and 0.05mm layer resolution. Reaching up to temperatures as high as 270°C, the Vertex printer can print PLA (Polylactic acid) and ABS (Acrylonitrile Butadiene Styrene), as well as other plastics.

Stand Alone Printing

The K8400 3D Printer Kit comes standard with an LCD backlit screen from which you can command stand alone printing. Stand alone printing allows you to control every aspect of your printing job, print from an SD card, and refill filament using simple commands. The Vertex K8400 is compatible with all common and freely available open source 3D printer software packages.


The extruder on the K8400 is stainless steel with a filament pulley wheel. Use the built-in setting for loading and unloading filament for your creations. The extruder is ultra-reliable with 1.75mm filament. See below for additional extruder option, which you can add on to the K8400 to make it capable of printing two colors simultaneously.

Printing Platform

The K8400 platform is made up of a 4mm aluminum frame (fixed), 4mm glass plate (removable), and Buildtak sheet. The platform frame is level and sturdy, while the Buildtak sheet on top makes the ideal print surface. View below for information on additional Buildtak print surfaces for your printer.


K8400 bearings are easy-to-maintain plastic and remain silent while create with your Vertex. Bearings and Z axis are manufactured to provide ultimate stability in your 3D print space.


K8400 Creations

Spiderbot by Modio3d printed with Vertex 3D Printer. Source: http://www.thingverse.com/thing460842
Zombie Head Hunter by Sculptor printed with Vertex 3D Printer. Source: http://www.thingverse.com/thing69709
Oranata by pitiflo printed with Vertex 3D Pritner. Source: http://www.thingverse.com/thing486983

Optional Upgrades for the Vertex K8400

Dual Extruder Kit (K8402)


  • 0.35mm Nozzle Extruder
  • Stepper Motor
  • Driver for Plug-In Stepper Motor
  • All necessary hardware

Velleman K8402 Dual Extruder Upgrade Kit for K8400 Vertex 3D Printer


Removable Build Plate (K8400-BT)

Add the K8400-BT Buildtak sheet to provide the optimal printing surface for your 3D prints to adhere to. is an easy-to-install, heat-resistant, long-lasting 3d printing surface. This print sheet allows for clean, easy removal of completed builds.

Velleman K8400-BT Removeable BuildTak Plate



Print Technology Fused Filament Fabrication (FFF)
Layer Resolution Standard 0.1 mm (Minimum: 0.05 mm - Maximum: 0.2 mm)
Build Plate 215 mm x 240 mm (8.46 in. x 9.45 in.)
Build Volume 180 mm x 200 mm x 190 mm (7 in. x 7.8 in. x 7.5 in.)
Print Speed 30 mm/s - 120 mm/s
Travel Speed 30 mm/s - 300 mm/s
Build Plate Surface Removable layer of BuildTak™ (consumable, also sold separately)
Filament Diameter 1.75 mm (accepts all filament spools with a mounting hole = 53 mm). Open filament policy.
Prints PLA, ABS Testing with other materials in progress.
Nozzle 1 & 2 Diameter 0.35 mm One nozzle supplied. Second nozzle optional.
Distance Between Nozzles 23.7 mm
Maximum Nozzle Operating Temperature 270 °C



Firmware Modified Open Source Marlin 3D Printer Firmware - user upgradable
Software Repetier - CuraEngine - Slic3r (RepRap compatible)



Dimensions X Y Z 360 mm x 380 mm x 395 mm (14 in. x 15 in. x 15.5 in.) (without filament spools)
Frame Polycarbonate panels and fibre reinforced molded ABS parts
Weight 10 kg
Average Noise Level During Operation 52 dBA (at 1 m)
Ambient Operation Temperature Max 25 °C
Storage Temperature - 10 °C to + 40 °C



Communication USB 2.0 or SD card
Controller Board AVR ATmega2560 based dual head and heated bed capable
Display 4 x 20 char. blue LCD with white backlight
AC Input 100 - 240 VAC 50-60Hz 150W max.

Additional Information

Difficulty Level 5
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Vertex 3D printer firmware single head M1-V1.1-H1
Firmware for the Vertex 3D printer with one nozzle. Version M1-V1.1-H1 [i][b]DO NOT FORGET TO RELOAD THE EEPROM SETTINGS AFTER THE UPGRADE![/b][/i]

Vertex 3D printer Repetier Host 1.0.6
Version 1.0.6. for legacy use only!

Vertex 3D Printer Safety Manual
Important safety instructions.

Vertex PSU cover
Vertex Power Supply Unit terminal cover

Vertex 3D printer firmware dual head M1-V1.4-H2
Firmware for the Vertex 3D printer with dual nozzles. Version M1-V1.4-H2 [i][b]DO NOT FORGET TO RELOAD THE EEPROM SETTINGS AFTER THE UPGRADE![/b][/i]

Vertex 3D printer firmware single head M1-V1.4-H1
Firmware for the Vertex 3D printer with one nozzle. Version M1-V1.4-H1 [i][b]DO NOT FORGET TO RELOAD THE EEPROM SETTINGS AFTER THE UPGRADE![/b][/i]

Vertex bracelet
Vertex bracelet .STL file.

Vertex logo keychain
Vertex logo keychain .STL file.

Vertex 3D printer firmware dual head M1-V1.1-H2
Firmware for the Vertex 3D printer with dual nozzles. Version M1-V1.1-H2. [i][b]DO NOT FORGET TO RELOAD THE EEPROM SETTINGS AFTER THE UPGRADE![/b][/i]

Info Sheets

Product Information

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

Resistor colour code

Options for the K8400.

Frequently Asked Questions

Q. Does the K8400 kit come with a spool of filament ?


No, the K8400 does not come with any filament.

Q. Does the 8400 printer come standard with the VM8400MB Atmega board that can be used for CNC, etc or what is the standard board used to drive the unit?


Yes, the VM8400MB is included in the K8400. 

Q. Does this model come with a heated build plate?


No. It includes a Buildtak sheet to print on – Velleman K8400-BT.

Q. Does the K8400 come with a single head extruder?


Yes. It is supplied with a single print head, but is capable of dual extrusion. The second print head is Velleman K8402.

Q. Can I use this heater plate in the K8400 3D Printer?

The P8200BED/SP is designed for the K8200.

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 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product