raidfibre

I have a solid to which I need to create a tapered extrude and add. I draw a 3D poly on the working plane (closed) and attempt to do a tapered extrude. It fails with the exceedingly helpful message: "Tapered extrude creation failed due to invalid parameter(s) for at least one profile object." The 3d poly is closed, I've tried re-drawing it several times, it only has 4 vertices (it's a rectangle) I've drawn the same thing on a new blank drawing and it extrudes correctly. I'm only trying to extrude this one single rectangular object. Is there any way to figure out what's wrong? Also how can I change the view so that I am looking straight down the normal to the working plane? Thanks!

Yes, it's a closed "3d polygon" drawn on the working plane and then extruded. I make a workaround that hopefully will be ok. I think the problem is when you have too many planes intersecting at one point (I had 4). The algorithm just can't figure out what to do. I changed my geometry a bit and it worked.

I am trying to draw a solid that will be the model for a thermo-formed plastic part. I have created a solid 3d shape by extruding a 3d poly to the required depth. I then created two simple 3d polygons which I extruded and subtracted from the main solid. I then try to shell the solid and it fails with the frustratingly ambiguous error message "shell solid failed" How should I create a shell if VW won't do it, and won't tell me what's wrong? I have no idea why it failed.