i3 Extruder Holder and Cable Guide for Heatbed

thingiverse

I'm using a Titan extruder as a bowden setup above the top mounts for my Z guiderails on an i3 (my printer is actually a Mk1 derivative). I've mounted it with longer screws, which made all the difference. The cable guide was designed specifically for a Mk1 heatbed that has a medium-density fibreboard base. The board itself features a 60x25 mm cutout, and I fitted the cable guide into that space. I then drilled holes, countersinking from the top after removing the heatbed from the board. Finally, I screwed on nuts and washers at the bottom. To keep my sensor insulated and measure the correct heatbed temperature, I applied some insulation foam to the cable guide. For added strain relief, I used two zip ties at the "tube" coming up from the board - there are already grooves for them in place. I printed the extruder mount with 3 perimeters and 20% infill using PLA+. Due to temperature issues, however, I opted for PETG with 55% infill and 3 perimeters for the cable guide. To ensure a smooth tube shape, I used support during printing.