Replies

1. 
   JohnWW | Feb 04, 2009 06:21am | #1

   Doug,

   The saving grace here is that you have quarter sawn wood to work with. If you use only carefully chosen straight grained quarter sawn wood, with all of the rings near to vertical, the wood shouldn't want to cup.

   Bread board ends are never a good solution on anything bigger than a bread board, the ends can't possibly restrain wood that is more than a few inches away from the end cap. Don't forget that the breadboard ends need to be loose enough to allow the top to expand and contract 1/2 inch or so due to seasonal humidity changes, which will also greatly effect the appearance of the table.

   Also, don't expect the aprons to prevent cupping, the attachment of the top to the apron, which also has to allow for wood movement, won't have anywhere near enough strength to resist the movement of the wood.

   Don't forget to apply the same finish in equal amounts to both the top and the underside of the table to prevent one surface from gaining and losing more moisture than the other, another sure cause of cupping.

   John White

1. 
   DougGF | Feb 04, 2009 08:34pm | #2

   John,Thank you for the response. I think I misspoke when describing my concerns. I am addressing potential sag across the width of the table. When viewed from end, sag towards the center of the unsupported potion between the tables slides.Doug

2. 
   fallen leaf studio | Feb 06, 2009 05:53pm | #3

   I like the outfeed table that you built in the tools and shops issue. Where do you buy quality phenolic plywood like what you used?

1. 
   JohnWW | Feb 08, 2009 08:24pm | #4

   Actually, I built the table in the FWW shop and they ordered the phenolic. I seem to recall that they could only find a few sources in the NY metro area.In most areas you can find specialty sheet good suppliers that distribute to commercial shops and industry, they can supply what you need, local lumber yards won't know what you are talking about.John White