Hi Burr,

>For your material issue, doesnt the SeparateOBJ editor fix that or are there limitations still?

That's the first thing I tried but the SeparateOBJ tool separates at sharp edges so a solid, say a cube, would end up as 6 separate objects, so you could imagine how many separate 'sheets' I would of ended up with in this model.
Unless I'm doing something wrong ?

>I'v been trying a sweep like this. Is it close?

Yeah, it is close but I find the profile will twist around it self so I used 2 rail helix curves, what I mean is you offset the second helix by the depth of the profile.

While on the subject of modeling threads Michael, in another cad program I use, within the sweep function there is a forced direction option so when you do something like a thread or spring with a non round profile using a single guide rail, you can force the sweep say in the axis direction (z direction) and this will control the twisting nature of the profile, is that something that can be implemented into MoI ?


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