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AroundTheFur
10-14-2004, 04:24 AM
searched for this and nothing came up that worked:

I have boolean surfaces (spheres cut away from spheres) and i want to do a fillet on the inside surface created with the boolean. The problem: the surfaces normals are pointing in the wrong direction causing the fillet to go from my one surface to the inside of the boolean object (seemingly the inside but really just the wrong side of the booleaned surface).

Reversing normals AND duplicating and reversing does nothing. Any ideas here? I will post a screen grab if this doesnt make sense.

many thanks
-steve
mimo8
10-14-2004, 07:59 AM
try to create the same situation without the booleans.
use the trim tool or think of constructing differently, but just avoid booleans.
they just dont work
SteveD
10-14-2004, 08:33 AM
what type of fillet do you need to do? i know on the circular fillet there is "primary radius"' and "secondary radius" that can be set to negitive to flip the fillet around.

otherwise reverse surface direction should be your way out of the problem, but like mimo says booleans can somtimes act very buggy.
scottsch
10-14-2004, 11:29 AM
Reversing normals AND duplicating and reversing does nothing. Any ideas here? I will post a screen grab if this doesnt make sense
Are you "reversing normals" in the polygon menu set (which won't work on nurbs) or are you chosing "reverse surface direction" in the nurbs menu set?

Even if the normals are going the wrong way, the circular fillet tool has reverse normals in the options box, so technically you don't need to reverse the normals on nurbs before doing a fillet.

If you are doing this with nurbs, the best way is not to use a boolean, but to select both objects and create the circular fillet with "create curve on surface" option turned on. Once you do this, you can "trim" the remaining geometry with the trim tool. Doing a boolean first is unnecessary.
AroundTheFur
10-14-2004, 03:18 PM
Well firstly thanks for the prompt replies. It just seems like this isnt gonna work. The boolean created surfaces will NOT reverse in direction no matter what. Not even if I trim out a projected curve and do a freeform fillet. So I guess I'll have to figure out a different way to do it.

Thanks again
-steve
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