Why does BooleanUnion fail given a closed extrusion and a closed solid polysurface?

mike15 · December 1, 2019, 1:47am

I’m trying to BooleanUnion these two objects:

BooleanUnion%20Fail

The cube is a closed extrusion and the other thing is a closed solid polysurface.

Here’s the file.

ivelin.peychev · December 1, 2019, 1:51am

Hi,

I believe it fails because your cylinder and box are tangent.

If you move/scale slightly the cylinder the booleanunion succeeds:

It might as well be a tolerance/precision issue.

DiegoKrause · December 1, 2019, 2:33am

In this case and if you can’t move one of the objects as @ivelin.peychev says, you can use _Split first, then extratct the surfaces you don’t need:

and then use _BooleanUnion:

mike15 · December 1, 2019, 3:00pm

I went with split first, then union.

Thanks for the advice, I’m back on track now.

lowell · December 1, 2019, 11:38pm