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How to make a helix throughout a shape?

Matias_HOJMatias_HOJ Member Posts: 3

So I recently got back to Onshape, and I have been messing around with the Helix function. But I keep running into problems..

I want to be able to make my Helix from one shape to another. See example here:

But I can't seem to choose both faces in the Helix feature.nor do i have the possibility to choose the conical shape in my Helix feature?

What you guys reckon I could do to overcome my challange?

Best Answer


  • Eric_WongEric_Wong Member Posts: 21 PRO
    The helix just makes a curve on a cylindrical face, it's the sweep that generates the geometry you see in the example you linked. What are you trying to select in your helix feature?
  • Matias_HOJMatias_HOJ Member Posts: 3
    Hi @Eric_WongI'm trying to create a helix from the cylinder to the top of the revolve. But it won't let me select both faces in the Helix feature.
  • Evan_ReeseEvan_Reese Member Posts: 1,426 PRO
    Answer ✓
    If I understand your goal, here's one way. It's unfortunately not as straightforward as just using the helix feature. Since you can't make a helix on anything but a cylinder or cone, I lofted the helix to the center axis of the part and used split to find the intersection. The composite curve and delete part features are just for general tidiness.
    Evan Reese / Principal and Industrial Designer with Ovyl
    Website: ovyl.io
  • Matias_HOJMatias_HOJ Member Posts: 3
    @Evan_Reese, exactly like that! Thank you for taking the time to explain this on an educational level.
  • Evan_ReeseEvan_Reese Member Posts: 1,426 PRO
    Glad to hear it. Now that I think about it, it might be a little bit faster rebuild time by sweeping a line to make the surface instead of lofting, but the principle is the same.
    Evan Reese / Principal and Industrial Designer with Ovyl
    Website: ovyl.io
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