Sculpt symmetry not welding vertices

[edfungus]

Hello! I have two tubes in sculpt mode that I am trying to weld together via vertices. They both have symmetry down the middle and have been flatten to the same plane. When I weld one side of the model, the other side doesn't weld the same way. What is going on? Thanks!

[TrippyLighting]

Please share your model. I believe this is a bug that I've come across before but did not report right away and then could not reproduce anymore.

[laughingcreek · Accepted solution]

t-spline symmetry has a number of issues along these lines.  we would call it a bug, AD would probably call it a limitation.  The biggest problem here is your connecting 2 separate bodies, each with their own symmetry planes.  to be fair, even if it did work directly the way your trying to do it, it could only work if the symmetry planes on each body were lined up.  which they are here, but they wouldn't necessarily be.

when you have issues with tspline symmetry, the only work around I have found is to clear the symmetry, carefully perform edits that maintain symmetry, and then re-establish symmetry.

here's a screen cast-