Why the hardness of the prints has changed? How to slow down the brittleness of prints?
The hardness of resin prints decreases as the temperature rises, so rigid resins tend to become brittle when the temperature is low, and soft resins tend to become hard.
But this change is reversible. After the temperature rises, the resin prints will restore its mechanical properties.
In addition, the greater the UV light intensity, or the longer the exposure time, the harder and more brittle the resin will become. Therefore, we must pay attention to controlling the exposure time of the resin during the 3d printing process and the post-curing process,especially the tough resin M58/M68/G217/K.
Spraying an opaque and airtight coating on the surface of the prints can slow it down.