CR10 CoreXY Conversion

thingiverse

**** This is not a how to - this is just to document what I did **** This project is an answer to a question I had. If you have a CR-10 and you wanted to convert it to a CoreXY while reusing as much hardware as reasonable, how would you do that? Whoohoo! Made it to V1.0! It works! Well! Want to see it print? Here you go! 60mm/s print speed (0.8mm nozzle/0.4mm layer height): https://youtu.be/QfFp9W3-uQs 80mm/s print speed (0.8mm nozzle/0.3mm layer height): https://youtu.be/TQ7TItRI7es Despite the ratty look the thing is SOLID. Wood is a great material, it's strong, absorbs vibrations and insulates well. The frame is square and the bed is very firm. Rapids are 300mm/s (on the original steppers running 0.7A RMS!) Print speeds are 120mm/s limited only by the volumetric flow of the extruder. Acceleration is 5000 mm/s^2 Build volume is 250x300x400 Print quality is fantastic! The Benchy pic above looks rough when really zoomed in but it's nearly perfect with no ringing and almost no ripples. The layers are very consistent and there's no z-wobble despite the unsupported Z rods. Oh yeah, it's also a 25 minute Benchy to boot! This printer is awesome! Some design wants: 1) Good printing Quality 2) Enclosure for ABS. Prefer working over 70°C 3) Move motors and electronics outside of enclosure 4) Use as much of my existing printer frame as I can Here's a list of modifications over the original CR10 (only the rails are really necessary, you could use the original electronics you'll just run slower) 1) Linear rails (MGN12: 4x450mm, 1x330mm) 2) Hemera Direct Drive Extruder with Volcano (modified Hemera to rotate motor) 3) BLTouch (v3.1) 4) Keenovo heated bed (mains powered, controlled via SSR) 5) Klipper running on RPI 3B+ 6) BigTreeTech SKR Mini E3 V2 7) Huge external electronics enclosure. CAD can be found here: https://cad.onshape.com/documents/4fbc19e016785fbf3b6d9dc2/w/fe811f4de2e20cb7a509b438/e/ca921a4475298f21da58ffd8