I3 RS Custom

thingiverse

I3 RS Custom. To make these modifications, you'll need rear profiles that are 120mm long, compared to the original 96mm. The Y axes will need to be 352mm long instead of 330mm for the original model. You'll also need to buy the BMG Trianglelab Prusa I3 MK3/MK3S kit and the double gear extruder kit (BMG Bondtech), all available from the same seller on Aliexpress. For the MMU2 part, you'll need to buy a complete kit again on Aliexpess. Print the Prusa parts except for the two frame holders. Personally, I printed everything in PET-G to avoid dimensional errors, especially with the extruder and MMU2 parts (the extruder is hard to assemble due to Chinese copy precision issues). I also installed a spring steel sheet with PEI coating, some magnets stuck under the plate, and that's it.