Solidify with overlapping vertices I have the following simple "2d" animation of a Pentagon:



I'm trying to convert it to 3d using the solidify modifier, however, I'm getting very odd behavior right at the end when the vertices overlap:



Is there a way to fix this issue?  If not, what's the best way to handle it?
In part you answered your own question. Solidify gets confused, when at the end the vertices overlap. I don't know how you animated your mesh, but instead of animating all the way to the point, where vertices overlap, stop a very little bit right before that point, like 0.00001 units away.