Designs by Jeremy Benjamin

For Project: Headband

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#1 headband coil spec by Jeremy Benjamin
I followed your specifications as closely as possible. There are a couple small discrepancies noted in the PDF of the drawing, and if you look closely there are a couple irregular shapes I had to add to get the segments to blend together, but hopefully this will be useful.
Dec 7, 2015 11:04
#2 revision A to my previous entry by Jeremy Benjamin
Here's my 2nd pass at it. It's not perfect, but I finessed the model to be smoother in those transition points than my previous version. The challenge is, I'm using a 3D mirroring function to keep it symmetrical, but when I mirror the object about the mid-plane, then the coil is going the wrong direction, so I get some wonky geometry where I try and bridge that gap. Still brainstorming a way to do this. Hopefully this 2nd try is a step in the right direction...
Dec 7, 2015 21:41


Jeremy Benjamin


Mon, 07 Dec 2015 21:53:25 +0000
correction: I used the word "helix" incorrectly, scratch that part of the sentence in my previous comment.

Jeremy Benjamin


Mon, 07 Dec 2015 21:50:31 +0000
It's tricky because when I take a coil and bend it around an axis to create that helix effect, the shape of the wire itself gets warped. If you zoom in close to look at any point along the curvature and took a cross section, it's not a perfectly controlled 2mm diameter circle anymore, it becomes this stretched out ellipse-like shape. If the coil diameter was uniform throughout the whole part that might be easier to design, but when there's a taper and a change of pitch involved, I have to model each of those regions of the coil in separate sections and then zoom in close to patch the wacky-shaped ends together. Perhaps there are other CAD programs that are better equipped for working these sorts of shapes, but those are the challenges on my end... Also I wonder if it might work better if you have a skeleton inside the coil, as in a plastic band that the coil is formed around, and just 3D the band and then have the coil wound around it.. Just thinking out loud...



Mon, 07 Dec 2015 12:58:06 +0000
I'm worried those irregular sections will be visible. If it is not possible to create the band without irregular sections, can they be dropped lower on the band? They will have a better chance of being hidden by hair. I'd rather not have any irregular sections, if possible. Would it assist the design if the coil was even wider at the top?