The Shop > Metal Stuff
Foundry Furnace for the Tiny Shop
Manxmodder:
The mysterious tale of the invisible engine,perhaps it's changed it's quantum state :bugeye: ,how well it performs nobody will ever know for sure. :lol:
The furnace lining looks promising though.....OZ.
vtsteam:
Oz, what it shoud have looked like:
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But that was in zinc alloy during the summer, and after trial and error modification to the sprues, which this leftover uncast pattern didn't have. Which was why it was never cast.
It would have been surprising if it had actually come out well, especially in a frigid mold and with a cool pour. I left the furnace open, without blast so I could take pix. Not exactly good practice before a pour. Especially at -11C. But pix were more important, anyway. This was a furnace test.
Manxmodder:
Steve,yes I remember the V twin crankcase experiment and the different sprue configurations well,I was hoping you would get time to make a full engine from it some day.
I don't ever see plaster of paris in any of our builders merchants here,but there are a couple of local companies who make ornate fibrous plaster moldings and that's where I'll be making some initial enquiries.
There is another plaster compound that is use to fix plaster boards with the dot and dab method, I have a half bag of it left over. Maybe worth mixing some up and making a couple of test blocks,drying them out and seeing how well they survive in my wood burning stove.....OZ.
awemawson:
It's available quite economically on eBay. Had some delivered back in autum last year.
Will_D:
There are different grades of P-of-P available.
I have found a ceramics company in Ireland which has some good info:
http://rpmsupplies.com/index.php?route=product/category&path=50_105
They list 3 PoPs
Talking to them about use in a foundry lining (50/50 with sand) he recommended the Crstacal R
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