The Shop > Metal Stuff

Foundry Furnace for the Tiny Shop

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vtsteam:
4:22 PM :

2-1/4 lbs of molten aluminum (1kg).

Quite a fast melt from 5 oz muffin ingots especially considering that I hadn't half-filled the furnace with charcoal to start. Very pleased with that.

vtsteam:
The pour. Sand was sub freezing, metal my worst aluminum, so not so pretty. And taking pictures of the melt with the furnace lid off didn't warm it up any!

vtsteam:
And the not too surprising result -- the metal never reached the actual pattern -- the square sprue sections have nice detail though!  :lol:

vtsteam:
And the various items cast with this pour:

A blob of aluminum that escaped when I accidentally knocked my ingot mold over  :wack:. And of course it escaped right into a small snow bank at the edge of the sand. No adverse effects though -- I was kind of wondering what would happen in such a case. But the snow is so cold and porous basically it just hissed slightly and solidified. I had to dig it out.

Then the "casting" aand finally a couple of small size muffins that escaped the upset. Not much to be proud of today as a metal caster except, IT WAS FUN ANYWAY!!!  And a big raspberry to winter.  :ddb:

vtsteam:
I covered the tuyere and exhaust vent with a brick waited an hour. Then opened up the plaster and sand furnace for an inspection.

It looks the same inside as it had before the melt. The walls are completely intact the corners are sharp, and the furnace wall even still shows the molding lines from the cardboard form, and a shiny surface where it had before..

Well, the same, except for one thing......the furnace is a little cleaner -- most of the brown tarry stains from the slow burning charcoal of the first firing had burned off.  :med:

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