Tolerances / Tension if 3D printed

[etkaar]

Hi! What I do not understand so far: When I have a bolt and a nut, what about the tolerance? What is the correct approach? Just using difference() will not cover tolerances, there might be to much tension.

I also tried nut() and bolt() (so int and ext), but there is too much tension if 3D printed.

[praetp]

Did you find a solution to this ?

[etkaar]

Did you find a solution to this ?

I am now using this library:
https://github.com/BelfrySCAD/BOSL2

[adrianschlatter]

Indeed, at the moment, threadlib has clearances built in (in accordance with the standards, where applicable, but the clearances are not adjustable.

It may be possible to implement clearing classes A, B, … according to standards. But as OpenSCAD is not really a programming language (but more a file format), I‘m not motivated to try that.