[mulligan]

Originally Posted by bbbbbb

Hi,, just a thought, rent a belt sander, then you will probably need a bunch of very coarse belts and sand it. There is also a power planer, it is very much like an old planer with a blade that will take off about 1/16 or less of an inch at each pass. If you can locate a good shop that has rentals, they will probably have both, the planer and the sander.
Caution, be aware of all safety, power tools can be dangerous.

Interesting.....A planer for a steel door.....HHMMMM