Sprue Burning Mandrel by Grobet Sale $3.50 | / SKU 21-0836 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available Sprue Burning Mandrel Heat over torch or burner to burn sprue opening into rubber mold. Eliminates the use of a sprue former in packing the mold.
