@amiedd they look great in clear styrene! Looks like you got the time/temp just right.
Also need to get our own temp gun as the surface/core temp is much more import than the time on the counter.
As we all get more experience we should take notes on our settings used, example:
Material Thickness Temp Notes
Styrene 0.02 280 F White is stiffer than clear and needs 10 F more
The most used food safe plastic is clear PETG. Also what standard Invisialign tooth aligners are made of.
PETG on Amazon