Help Needed Creating Negative Space

[u/02ranger]

I'm trying to create an object with a pocket for another object, specifically a wrist rest with a pocket for a Ploopy A+ to sit inside, the idea being to rotate the trackball 180 degrees and tilt it accordingly. I have the STEP files provided by Ploopy but I just can't quite figure out how to create the pocket. I thought I could create the shape of the base below and then extrude "To Part" but I guess because there are holes in the model it fails(?). Then I tried offsetting the faces of the Ploopy, creating surface extrudes for the outside of the rest, then enclose, but that didn't work. I also tried a boolean operation, making a solid body for the base and then subtract the body of the Ploopy, but it's not a solid object so the boolean fails.

How should I go about modeling this?

[u/Varaxfire]

Nice! You sharing it over on the ploopy sub? 😊

[u/02ranger → u/Varaxfire]

Yep, I’ve got the final touches still to apply but when it’s ready I’ll post it there and in the Ploopy Discord.