Mitch wrote:
I need to make a cabinet door that is 24" x 18" and is curved. Think of
it as a section of the wall of a vertical cylinder. The radius is about
17". The surface will be veneered.


Think 1/4" "Bending Poplar" plywood.

What you are describing is done quite frequently with fiberglass in boat
building.

Might consider building a bending form that represents the inside form,
then laminate 1/4" layers.

NOTE: Allow for spring back.

Building a frame around is another matter which is a separate discussion
if you are interested.

HTH

Lew