I am building a Gingery Metal Lathe, I keep adding to the playlist below. Subscribe to my channel on YouTube and configure alerts for my channel if you want to receive notificantion when I add videos. I downloaded the first three books in the series for Kindle. Morgan Demers inspired me with his videos of building his lathe.
My first charcoal foundry was a bit too messy, dusty, and expensive. Waste oil would be cheaper but kerosene works better to get it started. I followed David D’s video on the Kwiky All Fuel Foundry https://youtu.be/E-l21wQ6X-E with minor tweaks. Kerosene works much better but doesn’t save me much over charcoal. It is still much less of a mess.
I poured the apron and lead screw supports and now have some data on the material loss and furnace burn rate. I lost 5% as slag, spillage, and leftover in the crucible. Discounting fuel used to heat up the foundry, I use about 0.45 lbs of fuel per lb of aluminum melted. I also did some calculations on what that means for my foundry’s efficiency. I used about 8M joules to heat and melt the aluminum when only 0.39M joules were required: 5% efficiency. This seems like pretty poor performance, but I found typical efficiencies for crucible type foundries are 7-19%, see http://www.mntap.umn.edu/metalcast/energy.htm. I definitely have room for improvement on this foundry. However, it works for now, and I can always try for better efficiency with foundry 2.0 and 3.0.
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The Charcoal Foundry (Book 1)
The Metal Lathe (Book 2)
The Metal Shaper (Book 3)
The Milling Machine (Book 4)
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More updates to come.