well we had actually been having trouble getting the metal up to temp, because of the primitive set up we started with. The bottom of the crucible was cooling because the coal was burning off quicker where the air flow was strongest. The melting temp of Brass is between 1600 to 1700 (ish) and I don't think the set up would have allowed us to go much higher than that. We didn't have a thermometer, so were going by the liquidity of the brass.
Not that you were attempting a professional level casting operation (trust me, I've done worse!) but I noticed you were using normal open bit tongs. You might want to invest in forging a ring to go around the crucible when handling it, with a little keeper bar to grab the rim, to more evenly distribute the weight of the material around the crucible. I've seen a crucible crack at temp and the liquid metal went EVERYWHERE.
Not a bad idea to put your molds in a big wash tub for "oops" containment!
This was the very first castings that we did. It was going to be a viking brooch but I dont think the finished product came out that well. We have been refining the technique and hopefully soon I can post a better process.
well we had actually been having trouble getting the metal up to temp, because of the primitive set up we started with. The bottom of the crucible was cooling because the coal was burning off quicker where the air flow was strongest. The melting temp of Brass is between 1600 to 1700 (ish) and I don't think the set up would have allowed us to go much higher than that. We didn't have a thermometer, so were going by the liquidity of the brass.
Pouscat 3 years ago
metal temp is important and that looks too hot for me
justleedslads 3 years ago
Not that you were attempting a professional level casting operation (trust me, I've done worse!) but I noticed you were using normal open bit tongs. You might want to invest in forging a ring to go around the crucible when handling it, with a little keeper bar to grab the rim, to more evenly distribute the weight of the material around the crucible. I've seen a crucible crack at temp and the liquid metal went EVERYWHERE.
Not a bad idea to put your molds in a big wash tub for "oops" containment!
Inventor81 3 years ago
thanks for the suggestions, we havn't been doing much casting of late, but hopefully next time we do we will be a little more set up for it. :-)
Pouscat 3 years ago
is that a ceramic crucible?
RainJetSprinklers 4 years ago
yes it was ceramic
Pouscat 3 years ago
This was the very first castings that we did. It was going to be a viking brooch but I dont think the finished product came out that well. We have been refining the technique and hopefully soon I can post a better process.
Pouscat 4 years ago
Another video of pouring molten metal but no view of the finished casting :-(
Bobanjudee 4 years ago 2
Cool... but, I like mine Medium Well... How about a video showing how you make the sand molds.
razorfish007 5 years ago
Look up Brass casting sand how to in my videos, Cato answers the question for ya.
Pouscat 5 years ago
...DAD?!?! O_O;; XDD Congrats o father of mine. You're on youtube! *pokes my wonderful father cato*
daichikasai 5 years ago