Parametric Proxxon MF70 CNC kit

thingiverse

Parametric Proxxon MF70 CNC kit The Proxxon MF70 milling aluminum: https://www.youtube.com/watch?v=0W1iQ1PUNVY The Proxxon MF70 engraving aluminum: https://www.youtube.com/watch?v=y5sDax8FGDc Following improvements/changes have been made compared to the design of ttsalo: - full x-axis table range is now available. Using the ttsalo design I lost 5 mm of the x-axis range; perhaps this issue was caused by changes Proxxon did make to the design of the MF70. - No bearings need to be removed/replaced; the x/y/z axis is simply driven by a coupler connecting the stepper directly to the handwheel. The coupler is slightly flexible since it is made out of NinjaTek. - holes for end switches have been added for all axis Required 3D printed parts: - BracketX.stl (1x) - BracketY.stl (1x) - BracketZ.stl (1x) - CouplerXY.stl (2x) - CouplerZ.stl (1x) Optional 3D printed parts: - ShockAbsorber.stl (3x) - DirtCapBracketX (1x) - DirtCapBracketY (1x) Required other parts: - Nema17 (3x) - hex screw m3x16 (15x) - grubscrew m3 (6x) - nut m3 (6x) - hex screw m3x25 (4x) or diameter 3 mm screws that 8 mm longer than the originals (4x) - hex screw m3x30 (4x) - washer m3 (4x) Optional other parts: - endswitch for x-axis and y-axis (2x) - screw m2.5x20 (4x) - nut m2.5 (4x) - endswitch for z-axis (1x) - screw diameter 2.5 mm, length 15 mm (2x) Suggested Materials: - ABS (95% infill): BracketX, BracketY, BracketZ - NinjaTek Cheetah (50% infill): CouplerXY, CouplerZ, DirtCapBracketX, DirtCapBracketY - NinjaFlex (20% infill, not important): ShockAbsorber - no supports are required Assembly instructions x and y-axis: - attach steppermotor to bracketX(Y) and shockabsorber using hex screw m3x16 (4x) - assemble couplerXY using 2 grubscrews and 2 m3 nuts - attach couplerXY to handwheel using hex screw m3x16 (of course the handle from the handwheel needs to be removed first). - attach bracketX(Y) to x/y table using hex screw m3x25 (2x), (or use the longer screws with diameter 3 mm if they could be resourced) Assembly instructions z-axis: - attach steppermotor to bracketZ and shockabsorber using hex screw m3x16 (4x) - assemble couplerZ using 2 grubscrews and 2 m3 nuts - attach couplerZ to handwheel using hex screw m3x16 (of course the handle from the handwheel needs to be removed first). - attach bracketZ to z-column using hex screw m3x30 (4x) remark: - I did tap M3 thread in the table for the X/Y axis since I could not source screws with the same pitch that were originally holding the caps. This is not required if screws can be sourced that are about 8 mm longer than the original ones. Changes 21 May 2020: - added optional dirt caps for BracketX and BracketY. Changes 01 Jan 2021: - added optional gauge holder "GaugeHolder.stl"