Please do not even try using iron on tape it is a disaster waiting to
happen.There are many other ways of building the material back up that will
not seal the wood the glue used for edge tape will seal the pours of the
wood and not allow wood glue to bind to each other. The edge tape glue has
very little holding power or shear strength.
There are many other ways of building the material back up
IE: cutting the existing tennon down 1/16 on all sides making a new mortise
to go over the tennon and then resizing to fit the old mortise after
cleaning it up and re squaring it.
"Anne Watson" wrote in message
hlink.net...
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