Union fails on Mirrored bodies

Need help? We are here.
1

Hi, I am using the beta version on IPad. Once you split a body, the delete one part and Mirror the other part, the Union command of those mirrored bodies fails. It claims “the boolean operation failed”. Any hint or a beta bug? Thanks.

2

Hi @flarecz ,
My guess is that if it did union, you’d get a non-manifold body, and Shapr3d won’t do that. This type of failed Boolean is not because of mirror then delete, but due to the geometries of the two bodies. Can you attach a screenshot?

3

IMG_0032
IMG_00321488×2266 220 KB

4

Screenshots attached.

The left part is the one I cut, the right is mirrored.

IMG_0033
IMG_00331488×2266 203 KB

I found out that if I move the right part (mirrored) by 0.01mm to the left, than the Union works properly.

5

I suspect the error has to do with the spot circled. If you were to remove that fillet before your split and mirror, you may not have to shift one piece. That said, shifting a piece a small amount will often correct this type of Boolean failure.

IMG_0494
IMG_04941280×1123 200 KB

6

Thank you very much for your feedback, really appreciated!