Mitch
You can make forms using MDF scraps. You can layer 1/8 or 1/4 inch ply to
build up the thickness and then veneer it. You can also use wacky wood or
Kerf cut mdf which as I remember is an MDF core with a layer of Italian
poplar glued on one side and the core is slotted to bend around the radius.
max

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.

Any suggestions or references that may be of help?

The application is for a set of base cabinets that fit in a corner of a
room. The corner cabinet will have the two curved doors (opening from
the middle.

Thanks

Mitch