# Threads and stuff

**URL:** <https://discourse.shapr3d.com/t/threads-and-stuff/30671>\
**Category:** Modeling Questions\
**Created:** [March 7, 2024, 3:39am UTC](https://discourse.shapr3d.com/t/threads-and-stuff/30671 "2024-03-07T03:39:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![shotfun](https://avatars.discourse-cdn.com/v4/letter/s/f17d59/32.png) [@shotfun](https://discourse.shapr3d.com/u/shotfun)\
**Post date:** [March 7, 2024, 3:39am UTC](https://discourse.shapr3d.com/t/threads-and-stuff/30671/1 "2024-03-07T03:39:41Z")

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hey all…does anyone know how I can change the thread angle on this file. I had a heck of a time figuring all of this out and I just dont know what to do. id like it to be a 45 degree angle so I can 3d print it properly. thanks so much for any advice. JC  
[Untitledyo.step](https://discourse.shapr3d.com/uploads/short-url/35qAOISQH6wnko0x04Pvexm2jKY.step) (381.6 KB)  
[Untitledyo.step](https://discourse.shapr3d.com/uploads/short-url/35qAOISQH6wnko0x04Pvexm2jKY.step) (381.6 KB)

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [March 7, 2024, 5:05am UTC](https://discourse.shapr3d.com/t/threads-and-stuff/30671/2 "2024-03-07T05:05:44Z")

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I doubt that the thread can be edited to a 45° angle on your threaded rod STEP file.  
You’re better off creating your own threaded rod from custom criteria, especially for 3D printing.

As an exercise, I took your STEP file and duplicated the screw and cut it in half.  
My assumptions are: maintain the ID of the shaft, the height of the outer flat and the pitch (if that’s the right term) at 8 threads per inch. I sketched a new tooth profile at 45° angle per your request (highlighted in blue). I used **Revolve** to create the new thread extending the length to 1" and revolve rotation at 360° x 8. You can see the comparison of my custom thread against the STEP file.

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**Author:** ![shotfun](https://avatars.discourse-cdn.com/v4/letter/s/f17d59/32.png) [@shotfun](https://discourse.shapr3d.com/u/shotfun)\
**Post date:** [March 7, 2024, 11:18pm UTC](https://discourse.shapr3d.com/t/threads-and-stuff/30671/3 "2024-03-07T23:18:18Z")

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Awesome. I really appreciate it. Ever since I started using this software you’ve been a huge help. I hope you have a really great day. Thanks so much for your time.