Originally Posted by captainpeter
I get the best (and most predictable) results by following a few simple rules.
• make sure normals point into the proper direction on both objects (nose-cone & cylinder used for cutting)
• make sure both objects are closed (maybe close the nose-cone temporarily at its base)
• make sure the mesh resolution is high enough
here's my _very_ rough attempt at it (both objects were 'double sided', then select base object first, shift select cylinder to cut-out, then boolean-subtract):
i managed to figure it out. still getting the hang of exporting the model to AC3D then back. I think i am getting somewhere now though. Will find out shortly. I'll follow your tips though. They make sense.