On Fri, 17 Dec 2021, Paul Koning wrote:
Interesting idea. A while ago someone posted a picture of what looks like a "go/no-go" gauge for DECtape reels. It is marked with the dimensions of the two sides: 2.504-2.505 inches for the "no-go" end, 2.494-2.495 for the "go" end. So that tells us the hole diameter is 2.500 +/- .004. Can 3D printing deliver that sort of tolerance (with hobbyist-price machines)?
That's huge four milli-inches, that's about 100µm. Hobbyist machines usually have a Z (layer) resolution of at least 100µm and a position accuracy of about 20µm. The specifications of my Adventurer 3 say 50-400µm Z resolution, 11µm X/Y accuracy and 2.5µm Z accuracy. For a spool it's the X/Y accuracy that matters (and the material of course).
Christian
