Loft tool for ring shapes

Hi! New to this software and I’m trying to mock up a little piece to 3d print. I have these rings of slightly different diameters which I am trying to connect using the loft tool. Though I drew guidelines, I cannot even get the tool to connect the faces before selecting my guidelines as it’s giving me “Error: operation failed as the resulting body would be invalid”. Help pleek, tyyyy!

Can’t loft a hollow face. There is a workaround. Loft the circles then shell the shape.

Yes, this is a limitation of the loft tool. Rings don’t work, but the whole circles without the wall strengths pre-sketched will.

So there’s two ways of doing this:

  • If the wall strengths are uniform throughout the whole tube, you can just loft the outer diameters and then use the shell tool to hollow it out.
  • If the wall strength isn’t uniform, you’d loft the inner and outer profiles separately and use a boolean operation to subtract the inner from the outer object.

Edit: @Oregonerd beat me to it. :slight_smile: