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File: penthreads.jpg (2.01 MB, 2144x1754)
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Any way to 3d model these threads in any autodesk program or sketchup?

(i've seen shitty "Coil for custom threads" tried it, cant get the spacing between threads)
Autodesk Inventor would be the best for things like this. You can input very precise measurements
Inventor and also Fusion360.
This might help you: https://www.youtube.com/watch?v=TR7fsgQNmEk
well it looks like i need to be able to input the Major/Minor diameter, Crest, thickness, pitch, and root[thread gap]. also possibly the Helix angle. But in both inventor and fusion all you get is the "accepted" thread sizes.

Also the coil thing isnt be made to adjusted accurately as i need it to be
Well, cut that thread and scan/photogram it then retopo. It will look great
Or if you need in solid, use scan as base and make from curves.

Even thread plugins for rhino are just optimally accurate. Same with solid works
File: Untitled-1.gif (61 KB, 528x759)
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Just use 2 extruded helices in 3dsmax
you can adjust the root, crest and pitch measurements, major & minor diameters
helix angle is just a result of turn count and height

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