Bookends Model Build: 銆怑asy to Use and Demold銆?-"wwwsentro-knittingmachinecom_2023" Made of premium silicone, our epoxy molds silicone are flexible, reusable, and easy to use, clean and de-mold, and hold their shapes perfectly even after you filled the resin, They feature a glossy interior to ensure wonderful finishes of your ashtray. A torch or heat gun is not recommended as they may cause damage. Bookends Model Build for Adult