Sheet cement /fibro works great to keep the crucible from sticking to the plinth, that's what I'm using and Denis/Melterskelter also was using it...
So the dimensions are more or less comparable, even the lid opening on my example is similar to your furnace. So if you can get enough gas in it,...
It's not my furnace but the one my foundry mentor uses (as well as myself on occasion) it dates from 1958 and the cross sectional drawing is here:...
Ok so the data sheet for that regulator says a maximum flow of 800 SCFH. So if I have 6 Kgs of propane per hour from the red devil regulator,...
I don't know how the flow rate would compare, we are using a "Red Devil" regulator with a maximum flow of 6Kg per hour or 13lbs, but use nowhere...
Propane burns fast enough to melt bronze in tight furnace confines with an inch or so crucible clearance (see photo above). You may need a higher...
Looks to be too cold, any pale blue-green flames coming off the molten metal surface in the crucible?. What's the furnace run off, gas or oil?, is...
I only know of this secondhand from a guy who cast tons of bronze tube: He used these hollow shell cores and filled them with steel shot to keep...
You may need a weight on top of the sand to overcome the buoyancy of the sand in the middle/core as it'll tend to float.
That's interesting, I was thinking along the lines of it being a layer of silicon carbide (silica sand + carbon + heat) like you'd get with a very...
Does the black layer chip off?.
Sodium silicate works well but having a CO2 cylinder handy is another added cost and it is very finicky to get a decent uniform gassing of the...
Anyone who doesn't wear protective gear while working with resin is asking for trouble: I use phenolic urethane no bake binder and it stains your...
Even the commercial resins for sand give off nasty fumes when filled with metal, you simply stay upwind of the smoke until it cools. The...
I'd imagine the silicon would dissolve into the iron but take time, my understanding of ferrosilicon is that it's added after skimming and just...
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