Issues with a Mesh Boolean

Im running into an issue where this insert won’t boolean into the slanted surface, I’ve come at it from a bunch of different angles and I’m at a loss. Any insight would be appreciated. There is another half sphere on the other side intended to be cut into the surface along with the oblong cylinder.

impossible to tell without a file-

can you post it?

Torso.3dm (12.2 MB)

Yeah I posted it

Hello- that is a problematic one - am I correct that these are the two objects you are interested in, at the moment?


The larger object is a bit messy - Check says
"Mesh has 5053 pairs of faces that intersect each other.
This can cause problems if you’re doing mesh Boolean operations with it.

You can see some bad stuff, as here:


Yeah, I ended up succeeding by increasing the size of the cylinder. I’m about to take the parts into netfabb to double check and repair the integrity of the parts

My goal was to cut the shape out of the bottom block like this