My house has all of the original oak trim, and my wife really wants to redo it in white. The baseboards, casings, etc, no big deal, they're not in great shape and cheap to replace, but the harder part is that we have high-quality solid wood (oak?) doors that I definitely don't want to replace, and I also don't want to ruin. They look like they've got a varnish or something on them now.
What's the best way to refinish them for painting? Chemical strip? Sand? Something else? I have 8 doors of various types that need to be redone.
(That closet door peeking out in the corner; pic is during the resanding of the floors, they don't look like that anymore ;))