Friday, October 21, 2011

Mind-bending bridle joint


Tonight I tried to make one leg joint to see how it would turn out in walnut. I made up an extra leg blank so I thought I would use it as a test piece. I also decided to up the challenge of the joint a bit and make it a mitred-bridal joint as Ian Godfrey did for his leather rocker. (You'll need to go back to the early postings in his blog to see what I'm talking about.)

So instead of a single tenon and a slot, I went with a double tenon (or fingers) and two slots. In addition, in order to get a sculpted inside corner, I added a mitre which allows extra material for rounding on the inside.

So here I am cutting the tenons of the bridal joint on the long portion of the leg.


After cutting the fingers, I cut the mitre on the table saw as well. For the other leg part, here it is marked for the mitre cut. For this one I decided to use my bandsaw. Not sure it was the right decision, I may try the table saw for both cuts next time.

And here it is cut:


Here is the resulting fit:



Not bad for the first time trying a mind-bending joint, but I'm sure I can do better. I think I had some issues transferring the marks from one piece to the other for the fingers. I cut one piece first and then transferred. Next time I might just mark both pieces before cutting. Also, I think my full scale leg drawing needs to be redone with bit more care. I found myself really relying on this drawing for a lot of markings and angle captures (and to keep me sane). I need to be sure it is as accurate as I can draw it if I'm going to rely on this strategy. It's the first time I've worked this way and I don't think I could have attempted this joint without full scale drawings.

Ok, well I'm going to glue up the first leg and bandsaw it to make sure I don't get any surprises when I go to my three remaining legs. Here is what is looks like now:

I'll see how good that joint is tomorrow.

1 comment:

  1. Hey Scott looking good. Email me I'll give you some tips.

    Lordly

    ReplyDelete