Edge Joining Boards
My wife has a little oak table that she picked up at the flea market. It did its job well for a couple of years, but then the glue in the glued-up top failed. The top separated into three boards.
The boards were joined together with a very old style tongue and groove. There was no way I could get the boards to go back together without removing the glue, which was a pain. Even then, I was never able to get the boards back together.
Since she told me I could trash the table if I couldn't fix it, I took my router with a straight but and removed the tongue on each piece by routing up to the edge using a Bora-type clamp as a straight edge. It took over an hour to get it right because I had to make sure the clamp was parallel and that I wasn't taking off too much wood.
After I removed the tongue, and took off a very small amount of wood on the groove side to make sure that the face was clean. That worked out well. Then I put biscuits in each side and glued the boards together.
However, when I joined the boards, the outside edges were flush, but there is still a tiny gap in the center of the table. The gap looks as if the clamp/straight edge flexed a little when I was routing. If you look at the clamp, I don't think there is a chance that it flexed. If I had bumped it loose from the ending side of the rout, the ending edge would not be correct.
Can you share any ideas about why there is a gap between the boards in the middle but not in the end? The gap is not bad enough to worry about, but it's clearly there. (I would have taken the setup to my friend who has a jointer, but the outside pieces of the table tap are glued to the legs and tray at the bottom, so that wouldn't have worked very well.)
Scotty: I can't change the law of physics! I've got to have 30 minutes!