It seems there are some issues with the Screw Maker macro here and then.
So I do open this thread, where feedback can be provided.
The generation of a real thread is possible with Screw Maker but needs a long time. It needs some minutes at my computer for one screw! So be patient. The console has now a feedback, which counts the rotations made at the cutting process.
I made some bugfixes lately. The latest version is Screw Maker 1.7.
Ulrich
Edit: There is a Version 2.0 posted here: http://forum.freecadweb.org/viewtopic.p ... =30#p95929
Edit: There is a Version 2.2 posted here: https://forum.freecadweb.org/viewtopic. ... 53#p234653
Edit: Screw Maker is now on github: https://github.com/ulrich1a/screw_maker