Multi-Start Threads Library

[Yoululauren]

I found this Stackable Screw-Top Containers  on thingiverse. It has multiple start/end threads. Is there a CadQuery library for this design?

I am currently using Thread and PlasticBottleThread from cq_warehouse.thread. Didn't find an option for multiple start threads. I suppose I can use Thread class to create one thread and then copy several times. Just want to know if I can save some effort.

Thanks

[Neri]

Sorry for the late reply.  My metric threads library which supports multiple starts with the 'n_starts' input parameter is listed on the Awesome CadQuery page (https://github.com/CadQuery/awesome-cadquery).

The entire thread path is altered when there are multiple starts because the slope of the spiral as it travels vertically is altered.  So copying a thread to multiple locations and rotating it won't suffice.

My metric thread library is made only for machine screw threads, in other words the threads are the typical 60 degree 'V' cut shapes with slight flat top and slight flat valley.  You can take my code and use it in whichever way you want, for example if you wanted a different thread profile you can change the shape which is being swept along the helix.