Replies

1. 
   Senomozi | Nov 15, 2007 06:01pm | #1

   Hello Ask,

   I think the only solution would be to rip the piece of wood, dress the two (or three) pieces and edge glue them back together.  To get a totally invisible glue line, rip along straight grain even if that means ripping somewhat diagonally.  That and perfect mating edges will give you an invisible joint and the cup will be gone.

   Regards,

   Senomozi  

1. 
   ASK | Nov 15, 2007 06:51pm | #4

   Senomozi and others who answered

   Thanks for the suggestions. The piece has been stored about 3' off the floor on saw horses. I do get some moisture in the cellar when it rains.

   I have moved it to the work table about 3 weeks ago but not on stickers which I will now put under it and see what happens over the next month or so.

   Then in all probability I will have to rip it as suggested and re-glue.

   I'll let you know how it goes.

   ASK

2. 
   saschafer | Nov 15, 2007 06:09pm | #2

   Bring it up into the house and store it so that it gets air circulation on all sides (in other words, don't lay it down flat on the floor; laying concave side down on four 1" x 1" x 2' stickers would be ideal). Wait a month and check it again to see if it's gotten any better. If it has, wait longer. If it hasn't, you have a couple of options:

   1) Use a design that allows you to pull the top down flat against some battens or other exposed and/or hidden structural members. Bubinga is pretty hard, so you may not be able to generate enough force to do this without building so much tension into the piece that it threatens to explode at some point in the future.

   2) Slice the panel lengthwise into four strips about 6" wide, flatten and joint each strip, and then glue them back together into a flat panel. Depending on the grain, you should be able to do this pretty invisibly.

   -Steve

    

3. 
   Dave45 | Nov 15, 2007 06:12pm | #3

   That's a pretty serious amount of cupping and it may be really difficult to save the board in one piece.

   How was it stored in your basement?  If it was laying on (or even near) the floor, it may have accumulated moisture on one side resulting in cupping.  You might save it by storing it for a while in a dryer location with good air circulation all around it.

   Another option would be to rip it into two (or more) pieces and edge gluing it back together with the growth rings of each piece going in alternate directions.  At the very least, this would reduce the amount of planing/sanding necessary to make it flat - and would also make the board more stable.