Woodworking Talk banner

1 - 5 of 5 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter #1
I am using a Steel City Mortise machine to make a mortise/tenon joint. Since the mortise bit extends a small amount below the square chisle the bottom of of mortise has "ridges" left from the chisle. Do I use a hand chisle to flatten it out or make the mortise deeper for the tennon?
 

·
where's my table saw?
Joined
·
27,756 Posts
I just clean em up a lil with a chisel, doesn't have to be perfect.
You don't want the tenon to bottom out in the mortise. :smile:
Yah, what he said... make the mortise a touch deeper to allow for glue squeeze out, and second don't use excessive glue or the tenon will keep poppin back out of the mortise due to hydraulic pressure. :blink: bill
 

·
Registered
Joined
·
173 Posts
I agree with all of the above. There is no penalty for making a mortise a little deeper than the tenon. The end of the tenon to the bottom of the mortise is usually an end grain to long grain glue joint, which is inherently weak anyway. Just don’t make it too much deeper. You don’t even have to clean up the ridges left by the machine, they are inconsequential.
 
1 - 5 of 5 Posts
Top