This new formulation is higher performing and lower cost. This durable PLA has a theoretical Heat Deflection Temperature (HDT) of more than 140C (285F) after heat treating though 120C or more.  This means HTPLA parts maintain strength and form to much higher temperatures than PLA, ABS, or Polyesters like PET. These loose structure as soon as 55C and by 100C.

How do you “Heat Treat” for maximum performance? Bake your parts into a oven until you see a change from translucent to opaque. Yes, there is an obvious visual change indicating the improved performance! We had good luck in a lab oven at 110C (230F) for an hour or less. We recommend leaving the supports on your parts, placing them on a non-radiating surface (like glass, ceramic, or composite), and letting them cool in the oven to minimize distortion. Parts can be baked at a lower temperature (though must be above 60C for any change to occur) for a longer time with less risk of unwanted deformation.