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Patriot_1776
Patriot_177622-Sapphire II
22-Sapphire II
October 15, 2019
Question

Hmmm, any ideas why I can't (so far...) get this to thicken? :)

  • October 15, 2019
  • 1 reply
  • 1944 views

Man, I'd like to print this after some tweaks, but it's fighting me...  and when trying it as 2 different sections splt along the right datum plane, I can see why because it will ONLY thicken one half one way, and the other half the OTHER way.  I think I might have to create each surface offset from this "center" one individually, and no, the "offset" command doesn't work either.  I'll get it....eventually.  😉  Hmmmm..

2019-10-15_VSS_TEST-05.jpg

    1 reply

    tbraxton
    22-Sapphire II
    tbraxton22-Sapphire II
    22-Sapphire II
    October 15, 2019

    I suspect the surface may not  be orientable in a mathematical context. Check out the link to a classic example of a mobius strip below. You may be able to analyze this with a field point if you have BMX.

     

    https://mathinsight.org/moebius_strip_not_orientable

    Patriot_1776
    Patriot_177622-Sapphire IIAuthor
    22-Sapphire II
    October 16, 2019

    At first I thought that might be it, but I've already thickened Mobius strips, and I was able to thicken my ArAnCa Loop, which is my take on the Mobius strip and is also one-sided.  Since I was able to do both halves independently, in opposite directions (sort of), I think what's actually happening is the surface is inverting on itself.  Try taking the STEP file, cutting the quits in 2 halves down the right datum, and thickening each, and you'll see what I mean.  I think I'm going to have to build it out of surfaces manually, then solidify it.

    These kinds of shapes just fascinate me and I'm going to start making polished bronzes of them through Shapeways, I'm hoping to start selling them thru there.

    tbraxton
    22-Sapphire II
    tbraxton22-Sapphire II
    22-Sapphire II
    October 16, 2019

    If a single sided quilt is split into more than one piece it will resolve the orientation issue. Looking at your model there is a sharp point that will not work for offset of the surface. I trimmed out the problem area and it will thicken as a single quilt, not what you want but at least it confirms the area at the center that is the problem for offsetting the surface.

    See the step file.

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