What does the Heat Deflection Temperature (HDT) of PLA mean in practice, how much above this limit can one expect an oversized, thick part to be without noticeable weakening? I’m asking specifically about this tablet holder:
I suspect that in the summer sun, behind a window, it could heat up to the HDT or a little more. This part is however much stronger than it needs to be to carry a tablet. Do I still need PETG?