@mptak said:
Sketchy Physics does not do very well with voids or holes. In this particular case you need to effectively build and group around the slot either with boxes or usually incremental convexhulls (wedges) at the corners. I'll do a quick rebuild and post it up. The other way is to attached things with the fixed joint as was done in the attached file but this is pretty rough. One thing that particularly helps in debugging models, especially ones with holes or slots is to turn on the debug readback collision geometry for assorted geometry.
Thanks for the help I'll keep it in mind.π