Some of the problem here seems to be that the mortises are probably no
longer straight sided. The racking has been working on an edge or
face to make it angle away from the bottom. Same with the tenon.
Given the now odd shape, perhaps cutting the mortise slightly larger,
filling it in with a block of wood, then going back and recutting the
mortise would fix that, Just about same thing with the tenon.
Carefully check that all four faces are perpendicular to the shoulder.
If not, make them so and then add veneer as needed. The new mortise
should be sized to the now fixed tenon.

It's a lot of work.


On Sun, 09 May 2004 02:17:02 GMT, "Anne Watson"
wrote:

If you can get the chair apart, cover the tenon with pieces of veneer or
the iron on tape they use for edging plywood, and use a hot iron to stick
them down.

"Scott Duncan" wrote in message
...

My sisters has the old, possibly antique, chair with mortise and tenon
joints pinned my finish nails. The glue failed many years ago and the