Making A Stub Haunched Tenon & Mortice???
I want to put a mortice in 40mm thick stock. Using the rule of 3rds the tenon should be close to 14mm wide.
I propose making the mortice using my floor standing pillar drill, the timber used will be the hardwood Utile.
Using a 14mm wide brad point drill bit to drill a starter hole to the depth of the mortice. Or perhaps a Forstner bit?
Then use a 14mm two flute straight cutting router in my 1/2" router to make successive
passes to get down to the depth of the mortice. Would I be better using a different cutter, perhaps an upward spiral cutting bit?
Then use a hand morticing chisel to square out the ends of the mortice. A 14mm mortice chisel is available.
Where I've mentioned 14mm is it alright to have it all 14mm, all fit together, machine ok?
Also when I come to make the stub haunched tenon, or stub tenon. As the mortice is 14mm wide how wide should I make the tenon to allow the glue to get in properly to make a secure glue join, 12mm, 13mm?
Also how far from the bottom of the mortice?
I'll be using a Grizzly tenoning jig on my cabinet saw to make the tenons. Do I need to make a haunched mortice to accept the haunched tenon, If so how could I go about doing that?
Last edited by Gaia; 07-14-2015 at 10:24 AM.