Olivetti DM 282 rotating knob (parametric FreeCAD)
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Replacement parts for a retro matrix printer.
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- Printables
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- Computers
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- Creative Commons — Attribution — Share Alike
This is a parametric rotating knob for an ancient Olivetti DM 282 matrix printer. You can change some values such as walls thickness or pin diameter in the spreadsheet if you want it to be stronger or if my tolerances are not good for you.
Slice it in Cura as it slices this model more accurate than Orcaslicer. I printed it with 0.4 mm nozzle and 0.28 mm layer height at 50 mm/s using PETG and it looks fine for me.
The original color is the same as the color of the printer, but I don't have filament of this color, so I decided that black will look here better than pure white.
Thanks for reference images and measurements of the original knob to Amedeo Valoroso.