I think that curve in the corners is a bit too tight to have anything make the bend without kinking or breaking - might experiment with steaming some door skin panel type stuff

for material, try an upholstery shop

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics