I would like to heat my build chamber upto 70°C. I am bit concerned about warping of the printed parts like the carriage holders, extruder mounts of the Bigbox. It seems like they are printed from edge material (PET G) ? The Tg of PET G is around 80°C. Any advice please ? My Bigbox is a plywood frame and I have enclosed my Bigbox with plexiglass and insulation foam. I plan to water cool the steppers and hot end.