Originally Posted by panhandler
I understand the traditional method of constructing breadboard ends for a dining table, but I was wondering if it would be feasible, advisable and reliable to construct the breadboard ends with a shallow groove (shallow mortise and tendon) and then use a floating tendon glue only in the end grain (such as the beadlock system or dominos) with them remaining loose for the longer tendons?
Anyone ever tried this? Was it successful?
As I never stand breadboards, they have two main functions:
1. to cover the end grain and serve a decorative function. This gives a more refined look.
Any method of attachment that allows for the wood movement conflict of perpendicular grain would work.
2. the function of holding the wide board flat:
This would see to demand a significant connection between the two boards. A substantial tenon and mortice walls that are as solid as possible
The centre is fixed solidly with a peg or other fastener connecting the top and bottom of the or mortice walls and the tenon. This can have a narrow area of glue 3-4 inches at most but the glue is on the side grain not the end grain.
The side pegs or pins have sideways elongated holes on the tenon not the mortice. Small dowels or biscuits would have limited restraining power but would work if there were no or only small forces.
The stub tenon mentioned would be better than nothing; it would at least avoid/hide the visual gap between the board and the breadboard.
A floating tenon would seem to have the grain in the wrong direction. A series of domino like connectors might work if they were appropriately sized?
If you were making a "shallow" M&T, why not just make a full M&T? Some type of full width M&T seems optimal.