Adding Bolts & Hardware Into Silicone Mold Designs By AlumiliteCorp in WorkshopMolds & Casting3,07326Introduction: Adding Bolts & Hardware Into Silicone Mold DesignsBy AlumiliteCorpAlumilite CorporationFollowMore by the author: Learn how to easily cast threads and bolts into your castings when designing and making silicone molds.