Hi, I've just put new pst-solides3d release on svn : http://syracuse-dev.org/pst-solides3d This agree a new way to deal with intersections : http://syracuse.eu.org/lab/bpst/pst-solides3d/sections/dw2.pst http://syracuse-dev.org/pst-solides3d/browser/trunk/tests/test_13.pdf Regards -- Jean-Paul Vignault