John Carpents
01-18-2010, 11:40 PM
I am looking for solutions to remove the cupping from a 48" round tabletop. It is a commercially made piece (Canadel), and their stuff is pretty well made generally.
My parents bought the table this summer, and put a custom cut glass top on it to protect the wood since it is a high trafic kitchen table. I didnt check the flatness when they bought it - but it certainly was much flatter than this since the glass sat flat with only small plastic spacers. Recently the galss began to spin on a high spot.
I put a 4 foot straight edge across it and sure enough it is cupped perpendicular to the grain, about 5/8" over 48" :eek:! The cup is downward - that is to say there is a crown in the middle. It is only out about 1/8" going with the grain.
I attribute this happening since we have central forced air heat with no humidifiers (very dry). The top side is stained and laquered - but the bottom has NO FINISH. The bottom is cleary dried out and the top not as much.
I thought of steaming the piece a bit, and then coating with shellac - but I dont want to seal too much moisture in.
Any ideas on a good way to remove a good deal of the cup, and then fknow when it is safe to put shellac on the bottom?
My parents bought the table this summer, and put a custom cut glass top on it to protect the wood since it is a high trafic kitchen table. I didnt check the flatness when they bought it - but it certainly was much flatter than this since the glass sat flat with only small plastic spacers. Recently the galss began to spin on a high spot.
I put a 4 foot straight edge across it and sure enough it is cupped perpendicular to the grain, about 5/8" over 48" :eek:! The cup is downward - that is to say there is a crown in the middle. It is only out about 1/8" going with the grain.
I attribute this happening since we have central forced air heat with no humidifiers (very dry). The top side is stained and laquered - but the bottom has NO FINISH. The bottom is cleary dried out and the top not as much.
I thought of steaming the piece a bit, and then coating with shellac - but I dont want to seal too much moisture in.
Any ideas on a good way to remove a good deal of the cup, and then fknow when it is safe to put shellac on the bottom?