View source for 3D printer - Velleman K8200

==Velleman K8200==

[[File:K82003dprinter.jpg|200px|right]]

The Velleman K8200 is an opensource RepRap printer, also sold under the [https://reprap.org/wiki/3drag 3Drag] name.  This printer is connected to a Raspberry Pi with [http://octoprint.org/ OctoPrint] installed.  To use, plug the 3d printer and Raspberry Pi into the mains and switch on, after a minute or so the Raspberry Pi will launch the webbased OctoPi control software.  Connect your computer to the Makerspace wifi and point your web browser at http://192.168.1.20.  

=== Specification ===
{|class="wikitable"
|-
|Build volume: ||200mm x 200mm x 200mm
|-
|Filament diameter: ||1.75mm
|-
|Nozzle diameter: ||0.4mm
|-
|Filament types||Most, but prefers PLA
|-
|Max hotend temperature: ||275 deg. C
|-
|Max bed temperature: ||80 deg. C
|-
|Hotend || Genuine E3D all metal hotend
|-
|Extruder || Genuine E3D Titan extruder
|}
* Magic numbers for Layer heights, use these for best quality:
: 0.100 mm
: 0.150 mm
: 0.175 mm
: 0.200 mm
: 0.225 mm
: 0.250 mm
: 0.275 mm
: 0.300 mm
: 0.325 mm

The Firmware has recently (20/12/2018) been updated to Marlin 1.1.9 with thermal runaway protection enabled. Certain constraints have been limited in firmware
* Maximum hot end temperature is 275 deg.C
* Maximum bed temperature is 80 deg.C
* Thermal runaway is now enabled

[http://www.k8200.eu/ Velleman K8200 web site]

----

=== Current Issues ===
* <del>There is a small firmware issues at present, on large Z moves the firmware will halt and the printer control board will need resetting.  During the print everything seems okay.  Therefore before starting a print get the Z axis near home.  If the board resets turn the printer off and on again (not OctoPrint) re-connect Octoprint and carry on.  I will investigate and rectify soon (KE).</del>  
* I have made a couple of changes in firmware

# Enable the 'noisy' endstop feature, this should prevent the error on Z homing.  
# Turned off thermal runaway on the bed heater (thermal runaway is still enabled on the hotend), this will prevent thermal runaway kicking in during a print. 
I tested for several hours and did not run into any further firmware resets.  Please let me know if you encounter any. KE.

=== Upgrade Plans===

; Todo
* <del>Look at Z nut, currently has a lot of backlash</del> Complete, but Z flexible coupler needs replacing, new one is on order 
* Install new power supply - This is the next upgrade required, current power supply cannot keep the bed up to temperature - ordered.
* Install RAMPS control board
* Install new belts and tighten properly
* Consider installing second Z lead screw and motor
* Consider upgrading heated bed

;Complete
* New Easy Peelsy magnetic bed surface has been installed.  Please do not use scrapers on it.  Clean with Isopropanol before using.
* Install new E3D hotend and direct drive Titan extruder for 1.75mm filament