I watched the Mission Impossible the other night where they have the suction cups for climbing glass. 

It was much easier to do this mod in PS than get into cad. Sometimes i forget how powerful PS really is. 

Magnets should just push in snugly, no glue needed for my applications.

I printed these at .1mm layer height, but i doubt that's necessary.

Let me know if these don't import correctly. it should have 3 added volumes.