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adrianschlatter / threadlib

thread library for OpenSCAD
BSD 3-Clause "New" or "Revised" License
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Internal thread vs 'difference' #41

Closed sverzijl closed 4 years ago

sverzijl commented 4 years ago

Putting some threads on my model.

Are the 'internal threads (ie Mx-int) equivalent to using 'difference' with a bolt or external thread or is there some tolerance built into the internal threads?

adrianschlatter commented 4 years ago

Hi @sverzijl

No, this is not equivalent. threadlib adds the tolerances required by the norms.

Putting some threads on my model.

Are the 'internal threads (ie Mx-int) equivalent to using 'difference' with a bolt or external thread or is there some tolerance built into the internal threads?

adrianschlatter commented 4 years ago

Update: It is still not equivalent but @bvarner has created a tap() module which does what you are looking for (see the development branch).