The maximum temperature that cured ArtResin can tolerate is 120°F or 50°C. At temperatures as high as that, the cured pieces may become a little flexible but once they cool off, they will harden up once again. If your cured resin is exposed to temperatures beyond 120°F or 50°C, however - for example, you leave a cured piece in a hot car for a long time - it could cause irreparable damage.
A word to the wise? Keep it cool!
💡 TIP: Learn more about working with epoxy resin in the heat of summer, read our blog How Does Hot Weather Affect Resin?
ArtResin: Made For Artists, By Artists.