Any Size 3D Printer

thingiverse

Update: organized scad files neatly and redesigned x-carriage to use end stop boards. Since I haven't printed the new design yet due to switching to XYcore, some STL files will need to be separated in your slicer to fit them on the bed. You'll also need to do this for smaller print runs by removing certain parts. This is a RepRap 3D printer evolved from the original Mendel. It uses 2020 T-slot sections for the frame instead of 8mm threaded rods. It features a single z-motor using a belt to drive two lead screws. The y-carriage employs a lead screw rather than a belt attached to the bed. I also took time to adjust the x-carriage belt so it pulls along one of the 8mm rods' axis, allowing for quick change extruders/cutters/etchers. The printer's size is determined by the length of the rods and lead screws used, which then dictates the lengths of t-slot required. The original goal was to achieve better z-height as this constraint limited some prints. I also sought a more adaptable and physically open design for easier extruder nozzle changes and bed cleaning. I have kept the x-carriage horizontal and increased the distance between rods from the original Mendel to fit the MK8 extruder better. If you want to use an existing x-carriage, you can switch it back (x_rod_centers parameter in CommonDimensions.scad). All moving parts are enclosed within the frame, preventing jumper cord entanglement and allowing for dust-free printing and fume containment. I've had it wired up and working using a RAMPS board and Marlin firmware but moved on to another project before testing its stability at high print heights or commissioning it thoroughly.