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Why does this extrusion fail?
Hi, This is probably a silly question, but I'm asking anyway. Why does this extrusion fail? If I try to extrude just one of the quadrants, no issues. However, extruding two diagonal quadrants fails. I guess it might have something to do with the center point, to which both are connected, but I fail to understand why this… -
Re: Why does this extrusion fail?
Thanks for those links, @pete_yodis The first glosses over a few exceptions, when it says Two well known exceptions where non-manifold geometry is regularly manufactured are coil springs (when spring-bound), and sheet-metal hems. But a third exception is perhaps of more general interest. If you bore a hole through a block… -
Re: Why does this extrusion fail?
It makes no difference whatsoever to the mathematics engine whether zero thickness geometry is added to an existing solid or created from scratch: even the tiniest amount of it, anywhere, is a show stopper because (currently) the solver cannot solve for this region. You cannot have more (or less) than two faces of a single… -
Re: Why does this extrusion fail?
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Re: Why does this extrusion fail?
I am aware of that, but given that I had a solid underneath, I would expect it to be possible to just add to my existing part. However, it is of course possible to work around this in several ways, it is just that I still feel it should be possible to extrude as one part in my example. -
Re: Why does this extrusion fail?
øyvind_kaurstad That is a common limitation in MCAD programs. You are correct in your assumption of the center point being at the heart of the issue. Someone more knowledgeable on this than me could answer more fully. Typical error messages in MCAD programs identify this as "zero thickness geometry". My assumption over the… -
Re: Why does this extrusion fail?
Have you tried the Extrusion to New and not Add, see if that works. I have had times when the extrusion works fine with ne but not Add -
Re: Why does this extrusion fail?
Thanks @lougallo Maybe these are helpful... http://www.transmagic.com/blog/19-what-is-non-manifold-and-manifold-geometry http://doc.spatial.com/articles/m/a/n/Manifold_and_Non-manifold_Objects_2264.html -
Re: Why does this extrusion fail?
It's called non-manifold. -
Re: Why does this extrusion fail?
And as expected, create new + boolean together fails too:
14 results