locks like _unrollSrf (explode=No) will joins all or to many edges in 2d - regardless of 3d connections.
for many workflows it would be nice to transfer the edge-Connectivity in 3d to the flat 2d Brep.
If you want as many connections as possible _explode _join is easy.
From a (/my) user perspective the command does not behave as expected and i would call it a bug.
I did not find the missing precision, so it seams that this (possible, additional ?) joined edges don’t behave consistent within document tolerance. Even more - some faces come with strange meshing-artefacts in 2d
unrollSrf_toMuchJoin.3dm (338.4 KB)
thanks for having a look at this
kind regards -tom