Spiral problem and intersecting volumes

Hello everyone and thank you again I learned a lot of things.

GT 22: The problem is that if I ever manage to model it, it will be 3D printed to serve as a mother part of the mold. How can we fill the void? I've tried a lot of things, thickening, etc. but all it takes is for there to be a mini crossing in the helix and the internal walls start to run away and I can no longer work the part (even a half cut doesn't work, the part has invalid bodies..)

 

Coyote: it's the same on my side in the surface as in many small walls intersect like on the screenshot I put at the beginning of the conversation, even when I check solid. Do you get a solid solid?

 

A.Leblanc: We redid your play and understood the history of equations quite well, at least on your example, thank you!:)

The problem is that when we switch to a variable pitch helix we cannot have an equation where we can select the total height of the propeller. We tried to make an equation for each height of revolution but at the time of the sweep in material removal it shreds the part more than anything else! I don't know if it's clear?

 

 

 


Part6.SLDPRT
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Hello

If you do a geometry check on your part, you'll see that you have a sharp edge at the very top because you made your cone at the same height as your spiral.

Make your cone higher, remove your spiral part and then cut back to the right height.

@+

see below it's made in volume about like your image

It's done via a variable-pitch spiral propeller

Volume scanning

I attach the file under SW 2012


spirale_lucas_martin1.1.sldprt
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Thank you again for all your help!

I am reaching my goal thanks to you. I can close the post.