posting is weird today...
I bought a 4' x 8' sheet of 0.030 thick styrene
for a project. I cut the sheet in half length wise,
and rolled and stored that half. There is no way that curl
is coming out.
I used styrene on the ferry because I didn't want to have to
seal and sand the sides of the ship.
It seemed like it would be hard to support while sanding.
On the fireboat, and the springer , I didn't want to battle
battle with the grain of the wood being weak when crosscut
at the narrow window frames. Having to seal and sand the
facets had a little to do with the choice of styrene in these instances.
I still fill and sand at all the joints.