Bullet casting ?
Other than candle soot what should I use as a release agent for my moulds?
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You should not need mould release of any kind.I've been casting steady for years now and have never needed it. Clean the mould with dish soap and dry completely before using, you shouldn't have a problem. 0 -
+1 on brier-49 Good quality mold blocks if taken care of can cast thousands of match grade bullets with no release agent. My suggestion is to leave the last cast with spru plate closed in the mold when you finish casting wrap mold block in wax paper when still warm not hot and store in a GI ammo can with desicant bag .what you dont want is oil inside mold block but also no rust to form the hot bullets left in the mold will help this. just my $.02 0 -
Thanks for the info.[8D] 0 -
If you have sticking issues after a very good cleaning look for a small burr near the sprue plate that can hook the bullet and keep it from releasing. I have also found the aluminum molds release a bit easier than the iron molds do. 0 -
A sticky mold can be helped to release MUCH easier by a bit of final polishing. I got this technique off the cast boolit forum.
Warm up the mold and cast a bullet. Cut the sprue. Do not remove the bullet from the cavity. Drill into the base of the bullet and screw a screw in, preferably with a hex head. A lag bolt is fine too. NOW remove the bullet. Coat with a paste of household scouring cleanser and water. Put back in the mold. Chuck the head of the screw into a drill. Run back and forth about 3-4 times for about 4 seconds each time.
This won't remove an appreciable amount of metal from the mold (mine still cast at the same diameter as before) but WILL remove any microscopic burs or imperfections that might hold up release; now the molds drop perfectly every time.0 -
there are good release sprays on the market, I use them and they work well both for casting and rust prevention when not in use. 0
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