We conducted a very quick test temperature resistance (70 °) for 3 3D printing materials we use regularly. https://www.youtube.com/watch?v=pjc7gnhaChQ We performed this test with the same file and the same 3D print setting (filling 100%). Each object is 5mm thick, 15mm height and 40 mm in length. PLA at a temperature of 70 ° becomes very resilient and the deformation is irreversible. PET at a temperature of 70 ° resists perfectly. Nylon at a temperature of 70 ° it also resists perfectly. Conclusion: Choosing your 3D printing materials and very important. PLA for use in your home or office can meet your need perfectly. But never let PLA near a heat box or in your car in the summer. We will soon test with ABS and Polycarbonate.