Remix'ed peaberry's mounts per his suggestion. Added 3mm mount hole w/ provisioning for a captured nut to hold the bed down against the mounts. Using the mounts to hold stack of a 220mm alum. heated bed 24V, cork insulation, and an old PCB heated bed. Total stack height ~10mm. So the mounts are taller. The heated bed should fit flush to top of mount.
Printed using PC filament.