I have an old maple table that a friend made around 25 or 30 years ago. The legs were simply mortised and wedged into the top, which is 1.5 inches thick. The mortises are nearly 2 inches square, the legs are 2.75. Big joints. While this may not have been the best method, the table has value to me. Over the years one leg has come loose, and the table top is cupped. I would like to remove the legs to flatten the top. While I can simply tap the one loose leg out, is there a good way to debond the others without harming the integrity of the joint? I am not sure but I presume he used Titebond. Heat? Chemicals? A good hard whack? Thank you for any suggestions. -JohnD
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Replies
John,
If the tenons come through the top, drill repeatedly into the wedges, and remove them. The legs should be easy to remove then.
If the legs are blind wedged into the underside of the top, you might try to just pound them loose. (One is already out, right?) You risk splitting the top by doing this, it depends on how much the tenons are flared out by the wedges. Put a clamp across the width of the top before trying to drive them out. If this is obviously not going to work, then you may have to saw the legs off at the top, and then either re-cut new tenons onto the legs (shorter table) or put new tenons down into the ends of the legs (not as strong).
Alternatively, it may be a good time to mortise the legs for aprons, and prevent a recurrence of the cupped top.
Regards,
Ray
Ray, thanks for the suggestions. The tenons do come through to the top. I guess if I were to drill the wedges out I could easily make new ones-slightly larger if necessary. No way to soften the glue? Thanks again. -JohnD
John
Depends on the glue:
PVA will soften under heat (may be too much timber to be effecive in this case) & vinegar will also work especially if you can get it into the joint.
Hide glue, again heat.
I don't know what will loosen up polyurethane or epoxy, if they can in fact be chemically unbonded, you may have to resort to brute force & ignorance.
Don
John,
It's hard to say what will soften the glue without knowing what was used, but the wedges are making a mechanical bond that you need to overcome. If one leg is out, likely the glue isn't going to be a problem.
Regards,
Ray
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