https://youtu.be/rTvbzKGp_NM?t=3
The surface temperature of the heating mat or pad equals the room temperature + adjustable temperature (0 to 30 deg C). The higher the temperature the sorter the curing time. For example, if the room is 25 deg C the highest temperature the heating pad can reach 60 deg C.
With a thickness of 3-8mm, heating up for 3 yours and cooling for 30min the hardness of the finished resin can reach 74A and above.
With a thickness of 8-20mm, heating up for 3.5 yours and cooling for 30min the hardness of the finished resin can reach 74A and above.
Note the thickness will affect the thermal conductivity, allow longer time for thicker pieces