Winelover
North Central Arkansas
Never had to use soap and water on a mold, let alone boil one. Spray on brake cleaner with handles attached. Toothbrush is optional.
Before the internet, never heard of or used sprue plate lube. Back when I started casting, it was with iron molds, only. A piece of burlap, canvas glove or 0000 steel wool, kept the bottom of sprue plates clean. As well as, removing any stray lead from the top of the mold surface.
Softer mold materials (brass & aluminum) require less abrasive techniques. Bamboo skewers, piece of sprue metal or burlap/canvas.
Before the internet, never heard of or used sprue plate lube. Back when I started casting, it was with iron molds, only. A piece of burlap, canvas glove or 0000 steel wool, kept the bottom of sprue plates clean. As well as, removing any stray lead from the top of the mold surface.
Softer mold materials (brass & aluminum) require less abrasive techniques. Bamboo skewers, piece of sprue metal or burlap/canvas.