On Dec 31 2009, 9:46*am, Jimbo wrote:
My house still has some of the original 100 year old paneled, pine
doors. *Unfortunately, they are all warped to some degree. *Is there
any way to fix this?

One good treatment, three bad ones. Check the door frames,
maybe the doors are straight and the frames aren't. You can
remove the trim around the doorframes and re-shim 'em
straight and square.

Disassemble the doors (by loosening the glue joints) and
reassemble with modern glue in fully-flat configuration (might
take some judicious re-cutting of the mortises and
a void-filling glue like Liquid Nails). If it's just a few
bad chunks of wood, you might make five good doors
from six twisted ones by mixing parts.

Run the doors, whole, through a drum-sander to flatten them, and
refinish.

Apply heat and moisture to reverse the warp, stabilizing the wood
with PEG (polyethylene glycol). Unless the doors were made with
inferior (non-dry or non-straight-grain) lumber, this will be a last
resort.

Like I say, those last three options are ... bad. I'd hit a salvage
yard for used doors, first.