Replies

1. 
   Wingdoctor | Jul 31, 2007 09:22pm | #1

   For many years the finished thickness of hardwood described as 4/4 has been 13/16". The big box stores, and some others, have reduced this to the 3/4" dimension. There will be a mixture of both thicknesses today among various woodworkers when refering to 4/4 hardwood lumber. I believe most (1 X) softwood has been 3/4" for a long time. The 13/16" measurement gives a board that has a bit more strenth and mass.

2. 
   HowardAcheson | Jul 31, 2007 11:56pm | #2

   Unless you are buying from one of the big boxes, you should find that surfaced 4/4 hardwood is 13/16". Construction lumber softwood is surfaced to 3/4".

   Howie.........
3. 
   joinerswork | Aug 01, 2007 12:51am | #3

   genec,

   If the plans call for 13/16", you cannot deviate from that.  It's the law.

    

   Just kidding.  Make the thickness anything you want, even 7/8", which is what I shoot for.  Of course, you may have to make other changes, such as the distance between tenons of any rails, or  maybe the length of the top, or the depth of the dadoes for the bottom, or...

   Ray