Fimo polymer clay is hardened by baking it for 30 minutes at 110 degrees Celsius (230 F) in the oven. Do you think a teensy would survive being "baked in" at that temperature?
Along similar lines, what is the max operating temperature for Teensy?
(I'm pretty sure my voltage regulators will fail before teensy, but want to make sure....sealed aluminum enclosure in bright sunlight for 6+ hours per day in texas summer, I've measured surface temps of 125F on the casing)
I believe there was a time when a Teensy was subject to some oven time for testing at around 500 F. At that point the circuit board started to peel apart and there was an unpleasant smell of burnt fiberglass that lingered for a bit. I think it's safe to assume the max safe operating temperature is below 500 F.