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Offsetting 2 Tangent Arcs - Works for unequal radii - fails when equal

Question asked by Rob Edwards on Apr 16, 2018
Latest reply on Apr 16, 2018 by Dan Pihlaja

Hi All


I'm surprised I haven't run into this before.  Here is a simplified version of my sketch - the left half of a 4 center arch.

For model reusability I was hoping to be able to make the radii equal (a 2 center arch) but SW refuses to play ball

Here I tried to make the 100R = 50

It will accept slightly above or below 50 but not equal.  Anyone any ideas what the problem is?

Thanks for looking


2016 attached