Hi everyone,
I spent days trying to figure this out so i am putting all the help full links i found on here as well. I’ve created a Python script that generates ISO-style metric thread profiles specifically optimized for 3D printing. This tool is designed to help makers, engineers, and hobbyists who want more control over thread dimensions when designing printable parts.
What it does:
- Generates internal and external thread profiles based on ISO geometry.
- Outputs an XML file containing all thread data.
- Supports a full range of diameters (8mm to 50mm).
- Allows you to define a custom pitch range using a start, end, and step value.
- Includes tolerance offsets to simulate different thread classes.
Why I built it: Standard thread libraries often lack flexibility, especially when working with 3D-printed parts that require custom tolerances or non-standard pitches. I wanted a tool that:
- Is easy to edit and understand.
- Lets me generate threads for any pitch range I choose.
- Produces clean, structured data for use in CAD or slicing workflows.
How it works:
- All inputs are placed at the top of the script and clearly marked.
- You can change the pitch range, thread sizes, tolerance offsets, and output filename.
- The script calculates thread geometry and writes it to an XML file.
- It’s beginner-friendly and includes detailed comments throughout.
HERE IS THE LINK TO MY FILE:Expanded_3DPrintable_CustomThreads.py there are other file in the link below as well
SimEyeSee did a great job creating his own file and explaining how to add the .xml file to fusion360. So go checkout their page as well. (LINK BELOW)
However i did have some issue trying to modify his file for my needs. but that what options are good for.
Requirements:
- Python 3.9 or later.
If you’re designing custom fasteners, threaded enclosures, or printable bolts for your Bambu Lab prints, this tool might save you time and give you more control. I’m happy to share the code and help others adapt it to their workflow.