Booleans and Filleting

 From:  iljens
879.1 
Heya!
I'm just playing around with MoI again, and was just wondering if I'm abusing MoI.
I love to merge together a rough shape with Boolean Union, and then Fillet any sharp edges. Then I cut up the general shape with sphere primitives and stuff like that using Boolean Merge. Now when I go ahead and start abusing Fillet again, I'm often getting nothing as a result.

Should you be able to Union, Merge and Fillet stuff to hearts extent, or is there a limit to how far you can split and fillet stuff up? I was sort of thinking that it might get messy when I try to cut stuff that's already been filleted, trying to fillet that in turn and so on. (All based on MoI getting angry at me after a few levels of cutting and filleting things up)

Cheers!
Jens