| Has any one tried an approach to stabilize the edge fibers of the
| cut edge? It would appear that might hold the most promise from the
| superglue result so far.
I've had good results routing both edges straight, flat and square and
joining with epoxy only. I cleaned up very carefully with a sanding
block - and there was no trace of joints after painting.
Might work for you, too. FWIW, I don't like butt joints in MDF and
normally do a M&T-type joint.
DeSoto, Iowa USA