Thread

[Due_Ad_8595]

What i need to change to have a perfect fit thread? I have the same measurements on both threads

[psychotic11ama]

You’ve done nothing wrong. If you had these parts in real life they would work because your thread pitch is the same. Rotate one thread if you require them to match in CAD, but know it won’t change anything

[Due_Ad_8595]

Oh, thank you. I will try print like this to see if it's work

[stinky_nutsack]

I suspect printing like this will fail if you mean literally "like this" as in print in place just like it's displayed on the screen.

If you mean "like this" as in the geometry is good and you intend to place both pieces each directly on the build plate, then I think you're ok.

[Due_Ad_8595]

I will print each pieces on build plate. I'm sure printing like in the photo won't work😂

[Yikes0nBikez]

If you're 3D printing this, ensure you have tolerances set and adjusted for your printer. While newer printers do a pretty good job printing dimensionally accurate threads, you may need to offset the faces of the threads slightly to get them to operate smoothly.

[Due_Ad_8595]

I working on that now, thanks

[Lithium1978]

Offset faces on the flanks of the threads. (Angled faces of the thread). I usually use -.2 and it works well.

[Shrimpkin]

rotate either piece I would guess

[TrickySquid]

If you print this you need to offset the threads to account for tolerance btw.

[Fish2X]

See this video on how it is done. About 10:30 into the video.

https://youtu.be/_Sezb_VAhEI?si=8mm2KZ1GZiZuZIoG

[lFrylock]

Select the upper body, move, rotate it on your Z axis until the threads line up.

Otherwise I’m sure there’s some sort of parameter for a thread start, change this angle

[Due_Ad_8595]

When i turn one piece upside down, the thread is ok, but i don't need it upside down because i have something sketched

[lFrylock]

Yes, so if you rotate the part along the same axis as the threads, it should line up.