Robo3D printer

roboabs_large
Technical Specs:

Build Volume: 254 x 228.6 x 203.2mm
Heated Bed: 8.4×8.4 heated surface on 10×10 bed for printing in ABS plastic as well as PLA
Hot end Nozzle Diameter: 0.4 mm diameter
Filament: Uses 1.75mm diameter filament
Motors: 5 Nema 17 motors with 48 oz/in holding torque
Electronics: Arduino MEGA 2560 with RAMPS 1.4 shield. Uploaded with the latest Marlin Firmware.
Layer Resolution: 100 Microns

Modifications

  • Added Bed levelers.
  • Added a Fan to cool the ramps board.
  • Replaced the Multi/Poly fuse of the ramps board with a 16V/14A version.
  • Added an Raspberry Pi for PC independent / network control. (OctoPrint/OctoPi).
  • Added a webcam and mount to monitor the print remotely and make time-laps video’s.
  • Added Z axis  smooth rod stabilizers.
  • Adding easy filament loading knobs.
  • Added some feet to the printer.
  • Adding LED’s to the extruder.
  • Use hairspray on the bed (Lóreal Elnett Satin) for better adhesion.

Problems found

  • The glass bed was broken on arrival (fixed by a replacement part)
  • One of the flexible z- couplings is bend, resulting in severe z-rods wobble and making grinding noises  (some Teflon spray helped for the noise), although the wobbeling does’t look very appealing i don’t notice any effect of this it in the resulting print.
  • Once the build table couldn’t reach the home switch
  • Bed temperature issues, the bed cannot hold 90 degrees when the cooling fan is switched on.
  • Jumps in Y direction, the pulley came loose form the stepper motor.
  • I had to tighten the X-belt
  • Nozzle clogging
  • added extra pressure on the filament springs.
  • Settings, Settings, Settings…….

Whislist

  • E3d printerhead
  • Mastering Smoothing
  • Flexible and other printing materials
  • multi-color / multi-material prints
  • Mastering Cad design.

Achievements

Printed 0.1mm layer heights in PLA and ABS.