Ah, that makes sense, thank you.
I was actually going to try this with two collision meshes next.
My current settings for the plug dildo works (one convex "shaft" mesh) so I'm optimistic adding another elem with a 2nd mesh will lead to the desired outcome.
I take it this is also my problem with my bender collision mesh; in order to archive more complicated collision meshes I can use multiple individual (convex) meshes and define them all in the ini.
I wonder if the collision mesh has any impact on the dildo staying in and not fall out or if there is any other way to achieve a dildo not falling out.
BTW, the main problem I had with the plug was that I initially stumbled over the density setting (weight) and thought "2kg of dildo, that's crazy" and set it to 500g. Turns out a 500g dildo can't penetrate for some reason
