Replies

1. 
   JeffHeath | Dec 08, 2008 12:48am | #1

   leom

   There are many factors about the properties of wood that can cause cupping.  Just a few are:

   • Allowing the wood to reach equilibrium with the environment inside your shop.
   • Milling the wood properly to remove equal amounts of wood from each side.
   • Working with reaction wood.
   • Improper claming.  Sometimes overclamping, especially with pipe clamps which can easily reflect, can cause cupping.

   And the list goes on and on....

   I don't know you're experience level, but learning about the properties of wood would be a great place for you to start to avoid this in the future.  The good news is that most of the time, you can reverse the problem, as you have.  However, there are times, especially with reaction wood, where the symptoms are irreversible.

   Have fun.

   Jeff

2. 
   oldusty | Dec 08, 2008 06:14pm | #2

   Leom ,

               Well , is it a panel that will go in a door frame or be held in place by other parts ? Usually once a door panel is in the frame it's movement is restricted by the frame , the panels can shrink anf grow but typically stay flat.

       So , get that panel in it's frame.

                 good  luck    dusty