Larson Splinting Materials are low-temperature thermoplastics. Sheets can be easily softened by placing in a hot water bath at 150°-160°F (65°-70°C) for a minute or less, depending on the thickness of the sheet. Thereafter they can be cut and molded to any shape desired. Splints will harden in 5 minutes or less at room temperature. Sheets are coated to prevent sudden self-adhesion, but can be easily self bonded with heat.