Gigantic Bastard CNC

thingiverse

Why 'Gigantic Bastard'? It's really big, being the illegitimate offspring of two prominent printed CNC projects: MPCNC and Root 2 CNC. I created this mostly because I already had an oversized MPCNC and needed more rigidity. This thing is built like a tank, and it's approximately a $50 upgrade if you already have a 25.4mm MPCNC. Update 08/06/2017 This project is no longer being updated. If you are just starting a build, I recommend my latest full 4x8' plywood sheet CNC instead. Update 4/3/2017 I added 23.5mm and 25mm versions of the files. I haven't tested these, but they should be correct. Use at your own risk. A bit of info on the pieces: spacer.stl This is a rounded spacer used in place of washers to allow 5/16 bolts to be used in place of M8 ones in Root 2.1 carriage. standoff_v2.stl This supports round tubes. You will need to drill a hole and use an M4 tap, then screw in an M4 screw about every 8-12 inches. This is the most important part of this mod - if you don't use screws in support, CNC will flop around. jig.stl This is a jig to help you drill holes for standoffs. It works best if you tighten down tubes, drill a hole, then slide to next position and repeat. Remember that all holes need to line up perfectly. If you mess up, just move over a bit and try again. sideMount.stl This mounts to MPCNC rollers and to gantry side pieces. Three holes fit 1/4" bolts. zaxis.stl This is a modified MPCNC Z axis that mounts to Root 2.1 carriage. tubemount.stl and tubemount_mirror.stl These are mounts for round tubes and belts. side.dxf This is the wooden panel that joins MPCNC sliders to Root 2.1 short axis. Print Settings Printer: SpiffBot Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: 0.3mm Infill: 50% Notes: Print with four shell layers, four top layers, and four bottom layers. I printed mine in PETG.