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I'm working on a face mask in Blender. I have gotten to the point where I'm trying to make ear loops for it. I've used the spin tool and gotten it pretty close, but I can't think of how to line up these faces or rotate the whole ear portion without it looking wonky. I feel like this is an easy answer, but I've lost some skill on Blender the past few months. Pictures are included. Please let me know how to solve this!

Far View

Close View - 1

Close View - 2

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  • $\begingroup$ Does your loop need to be exactly semicircular, or just smooth? $\endgroup$
    – Robin Betts
    Sep 2, 2020 at 16:33
  • $\begingroup$ @RobinBetts Just smooth. I'd love it to be pretty close, but I don't think it matters too much as long as people know that it's an ear loop. $\endgroup$
    – Chase
    Sep 2, 2020 at 16:42

2 Answers 2

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This is not a bad candidate for modelling with a curve and a profile, but you might be surprised by what CtrlE > Bridge Edge Loops can do.

enter image description here

In the foreground there are a couple of yellow faces, slightly pitched along the desired arc, to set everything off in the right direction. Behind, in blue, the same two faces, linked with Bridge Edge Loops, with Blend Path set, quite a few Cuts, and other settings at default. You might have to flip one end's normals, in your case, to get it to work, or use the perimeters of regions of deleted faces, with the same vertex count.

In your case, you're right about wrangling the orientation of the bridge. The algorithm by which Bridge Edge Loops decides which way to go is apparently not as simple as detecting normals..

enter image description here

So you can give it some hints. Here, I deleted an equal region of faces at both ends, selected both the perimeters, and ShiftS put Cursor to Selected, between the holes. I ShiftD duplicated one of the perimeters, and with the Cursor as pivot, in an appropriate view, rotated the duplicate to about the halfway angle. Then bridged the 3 profiles (in one operation), adjusting Smoothness.

You could dupe from both ends, tweak the in-betweens, maybe Loop-Tools turn the profiles into circles for a tubular band...

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  • $\begingroup$ This is all working brilliantly. However, I did encounter the normals situation you described above. And whether I choose the face, or the perimeter of a deleted face, it still wants to go the opposite way on one end. I've tried flipping the normals and it won't switch. I've even looked at the overlay for normal direction and tried both ways and it won't switch. I'm happy to edit my question to add pics of what I'm talking about, if you'd like. $\endgroup$
    – Chase
    Sep 2, 2020 at 18:10
  • $\begingroup$ @Chase maybe share on blend-exchange.giantcowfilms.com? $\endgroup$
    – Robin Betts
    Sep 2, 2020 at 18:15
  • $\begingroup$ Thanks! I'd forgotten about that. I updated my original post with the link. $\endgroup$
    – Chase
    Sep 2, 2020 at 18:21
  • $\begingroup$ @Chase You're right... So frustrating!.. :D ... see edit to answer. $\endgroup$
    – Robin Betts
    Sep 2, 2020 at 19:28
  • $\begingroup$ I appreciate your time and patience on helping me solve this one! Thanks, Robin! $\endgroup$
    – Chase
    Sep 3, 2020 at 19:19
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If I'm understanding your question:

  1. Select the ear loop and detach it from the rest of the mesh pressing L;
  2. Activate the proportional editing with O;
  3. Select the end-face of the loop (the one you want to bring to the mask mesh);
  4. Move it with G and setting the action radius with the mouse wheel (be careful not to reach the other end with a big radius, or you'll move it too).
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  • $\begingroup$ Setting the Prop. Edit to 'Connected Only' will prevent interference with the rest of the mask.. $\endgroup$
    – Robin Betts
    Sep 2, 2020 at 17:38
  • $\begingroup$ Right! I forgot it! :-) $\endgroup$
    – mugnozzo
    Sep 3, 2020 at 9:21

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