Metric Cylinder Gages [TinkerCAD + OpenSCAD]
by ibudmen, published
Time spent reprinting and reaming parts because of tolerance differences between your CAD and printed models can really start to add up. I've found that the number of shells on an object is directly effects the tolerances on any part. I made these cylinder gages as reference tools to help remedy the issue.
HOW TO USE:
- Measure the size screw you want to use - M3, M4, M6, etc...
- Decide on number of shells being used - 1 shell, 2 shells, 3 shells, etc...
- Match gage to program being used - TinkerCAD or OpenSCAD
- Find appropriate size hole for screw on gage - M3 screw fits in TinkerCAD 4mm hole
- Use matching digital hole size in CAD model - In software 3mm hole changed to 4mm hole
- Reprint with correct tolerances! - Fit's like a glove
I printed one of each of these with 1 shell, 2 shells and 3 shells. I would recommend printing them with your most frequently used shell preferences.
1mm - 1.5 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20mm
RULE OF THUMB:
- higher # of shells = smaller the size of holes
- higher # of shells = larger the size of cylinders