Hi Michael,

thanks for your help. Yes, it makes sense, and actually now that you mention it, I remember that I've read about the small fillets in another thread. As far as adding adjacent edges for the fillets, that was actually anyway my intention, to be precise I tried to fillet all edges but the ones on the bottom face, didn't work though, that's why I tried to fillet a few at a time ... the rest is history.

It still doesn't work on the whole part, so I started filleting all the individual parts before I union them (4 parts), I can get it to work on three of them, the fourth I'm still experimenting, trying to figure it out before I bother you again.

I have to say, I'm amazed how fast, and how extensive and thourough the help on this forum is, especially from you Michael. I really appreciate it.

Armin