All; For some reason, I can't create a volume from the surfaces in this geometry, any suggestions? ...Dan -------------- next part -------------- A non-text attachment was scrubbed... Name: gun.geo Type: application/octet-stream Size: 4432 bytes Desc: not available URL: <http://www.geuz.org/pipermail/gmsh/attachments/20090603/2bc8eecb/attachment.geo>