Quote Originally Posted by M250cnc View Post
The Tee Slot nut will just pull straight out through the MDF or you only clamp with finger pressure:rofl:
That's why I suggested in my last post putting a thin sheet of steel under the top MDF layer, so that T-nut is pressing on the steel, not MDF.

I like the idea of threaded inserts, but they're not so versatile as T-slots.