Casting Aluminum for a CNC machine
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Please wear gloves, at the very minimum...
1 year ago 5
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Hi, I am self-learning. It has to be easier if someone else is going to train you! Building the machine and learning all the software is kicking my butt. All the info is on the net though - thanks to all the open-source folks.Have fun, Rob
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Thanks Scott..Good luck with yours. The smaller crucible size melts very fast. Most of my castings are well within the volume of metal that fits in a used disposable propane bottle crucible. A stainless crucible would be a treat.
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I agree- It is a bit of an adrenalin rush as the consequences of a mishap are severe. My main crucible lifting tool is a stainless pincer that has hooks that face outboard and hook through the crucible. My biggest weakness would be a crucible failure. Thanks for the advise- Caution Caution Caution.
rjeblogue 4 years ago 4
Hi,gas produced by evaporating foam is fixed by pouring into a reservoir. It creates head pressure,forcing gas out the mold's exit vent instead of the reservoir.Are you referring to hydrogen gas in the melt causing porosity? Haven't tried,but chlorine tablets can degas it.Read a safer method involves inert gas bubbled into the melt.Never tried either and am lucky porosity doesn't affect my casting now.Switched to Zinc/aluminum alloys as they melt at lower temps and are strong like cast iron.
rjeblogue 4 years ago
I am trying to document my CNC machine construction at my website (faireandfoundry) where I linked this video clip. I am melting aluminum to pour a casting of a bracket on my CNC router. I think my set-up is considered a foundry and not a forge but the propane burner could also be used in a forge. Less insulating material would be needed in the kiln as I would only be softening metal to pound it out or heat treat it and not trying to reach it's melting point to pour it. Thanks for looking!
rjeblogue 4 years ago