This may be more pertinent to the mold design forum, but is asurfacing issue. I have an imported part that I doing a core/cavitysplit for. I kind of use the mold tools, but not completely. I haveall of my knit surfaces for core, cavity and parting surfces in thepart file but for a few reasons that are not relevant to my problemI choose to do my split in the context of an assembly.

I create my core and cavity blocks in this new assembly-then bringin the molded part and position it. I then edit the core and copythe core surface and the parting surface; knit them together and domy surface cut. No problems.

Then when I try to do a similar thing for the cavity, I get anerror message when I try to offset the cavity surface by a distanceof zero: resultant body is a self-intersecting surface. News to me.I go back to the part and look it over and find no problems. Then Itry to offset that same surface in the part file-just for grins. Noproblem-no error message-everything looks fine.

I go back to the assembly and edit the cavity part and try tooffset either one of these surfaces with no success. Anybody haveany ideas on what is going on? A body check shows no problems, bythe way.SolidworksSurfacing