<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Times New Roman; font-size: 12pt; color: #000000'><br><br><hr id="zwchr"><blockquote id="DWT666" style="border-left:2px solid rgb(16, 16, 255);margin-left:5px;padding-left:5px;">Hi Graeme,<br> Can you describe strictly in mesh terms (w/o implementation details) what you're trying to do? From your <br>description, I'm uncertain whether you're trying to a) split one face into two, each seeing one of the tets bounded by <br>the original, or b) split one edge into two edges, at the same time splitting the connected tris and tets to maintain a <br>conformal mesh. Once you've described that, we can talk about how that should be implemented on top of MOAB.<br><br>Thanks.<br><br>- tim<br><br></blockquote>Ouch, I didn't think at it like that.<br>In a previous message, I think you were trying to create cracks along faces/edges of existing tetras. I didn't think that you were splitting tetrahedrons. Are you ? for sure, it would make more sense to split tetrahedrons, so the crack can grow in any direction, not only where the mesh boundaries/faces between tetrahedrons are.<br><br>Iulian<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"></blockquote></div></body></html>