A couple of questions on the wedged tenon:
The 1/8" you are taking off the ends of the mortise - I'm assuming that is a sloped cut and not a full 1/8" taken off half the depth of the mortise?
The cuts in the tenon - is that just a single saw kerf or is it wider?
How long (approx) does the wedge extend into the tenon?
BTW - I'm really enjoying this, keep up the good work!
Tim The 1/8" is sloped you can see it in post No 25, 2nd pic.
The cut in the tenon is a single saw kerf.
How far do the wedges extend into the tenon?
Well I aim at sending the wedge no deeper than half way down,the tenon,the drilled hole is to stop any split being caused by the wedge.
This is where a bit of feeling comes into the job,I made an 1/8" gap either side of the tenon so common sense says each wedge should be 1/8" thick where I intend it to finish on the surface of the leg.
The leg is 4" thick so I want the wedges to go no deeper than a small 2",at this point on the wedge I will see that the wedge is at least a 1/4" thick because as you can see in the pics the cut off wedges are more than 1/8" thick at the cut off point.
If this was a stub tenon the wedges are placed in the tenon and then the tenon in the mortice and the job is the clamped up.The clamps force the tenon into the mortice and the mortice forces the wedges into the tenon.The mortice is also wedge shaped to allow the tenon to spread and dove tail its self into position.
If you get the wedges wrong the tenon can drive its self into the sides of the tenon and it just gets stuck and your not going to get it out that's why its sometimes called the suicide joint.
On stub and through tenons I ease the arris on the end of the tenon.
Whats the arris?In wood work and architecture when you have two flat surfaces joining this causes a sharp point this sharp point is call an arris.When you ease the arris you put a shamfer on the wood. On a through mortice this stops the tenon from busting the wood as it exits the mortice and on the stub tenon it helps to ease the tenon in when it expands.
Sorry for the long post Tim.