ORIGINAL: antonio104
diony:
Sorry I didn't read your first post closely enough. "...post my experiences in trying to form the perfect canopy!..."
The Perma stone is less than $10 a can to try, but looking at your finished canopy, not as good as your method.
I like it because it is a lot harder than plaster, ready to use the next day without coating and produces a not-bad result.
The missus is around so I have to wait awhile to use the oven to try to form a new canopy to take a picture of.
Haha

That's good that it's stronger than plaster, won't chip. I would think that all it needs is a good coat of primer and a good sanding with 400 grit, then it would be perfect. You should try it, I would like to see your results. Just make sure that you let the primer fully dry over a few days. I am going to do some experiments with Bondo, I am thinking that it will be very smooth and not need to much prep work.
Dion