Replies

1. 
   ring | Jan 03, 2010 04:00am | #1

   No biscuits, no splines. Just make them fit perfectly and glue them up.

2. 
   SteveSchoene | Jan 03, 2010 09:07am | #2

   Agree with David on this 100%. Splines and biscuits don't add strength. For alignment, a couple of cauls to keep them in the same plane during glue up won't hurt, but if the edge joints are truely square it will be fairly even to keep them flush with each other.

3. 
   oldusty | Jan 03, 2010 12:05pm | #3

   Jack ,
   The 13/16" after
   Jack ,

   The 13/16" after resawing will not yield 2- 3/8" finished panels , maybe 5/16 , 1/4" for sure .If you need the thicker maybe bookmatching or pleasing grain of a few boards to make the wider panels , surface the 13/16 " down to the 3/8" removing equal amounts from each side.

   The kd wood still has the ambient mc say 7% , the mc is centered in the board and stable ,when we slice it we have made an abrupt change and the board may no longer be stable .

   The QS Red Oak I have resawn from kd wood warped bad , the air dry vs kd may be the link to success here .

   regards dusty ,boxmaker

4. 
   JeffHeath | Jan 03, 2010 12:13pm | #4

   I do this a lot, and I agree with everybody, especially Dusty. 13/16" is mathematically enough to yield two 3/8" finish thickness boards, but in reality, 95% of the time it is not. Most of the time, resawing will either release some internal stress on the board, or allow the inside faces with slightly more MC to release some of that, causing the boards to move just enough to screw up the plan.

   I would look for two boards that match quite well, grain an color wise, and use them. Or, just figure on having thinner boards, and don't cut your dado's until after the boards are at finish width.

   The strength of a long grain vs. long grain glue joint is stronger than biscuits or a spline. No need to ever use them, unless you feel you need an alignment guide. In truth, an alignment guide can be accomplished with cauls, as Steve suggested. The cauls are reusable, and are a lot less work.

   Jeff