gunner312
gunner312
Last edited:
Muller build
- Thread starter gunner312
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Awesome job. Do you have more pics and details?
It does look very impressive but I cannot understand why you need it . For several years I operated my own small foundry producing non-ferrous sand castings and never once had use for a sand muller.
I bought "petrobond" ready mixed in 25 kg bags .
Petrobond is a facing sand and only a very small amount is required per mould .
Applied through a sieve a thin coat just covers the pattern surface , the remainder of the mould being re-used green sand.
I had about a 1/2 ton of mansfield moulding sand which was re-used daily and all that was required for use was a sprinkle of water and turning over with a shovel.
The market for precision castings being more lucrative I now only produce using the lost wax process.
Dan.
I bought "petrobond" ready mixed in 25 kg bags .
Petrobond is a facing sand and only a very small amount is required per mould .
Applied through a sieve a thin coat just covers the pattern surface , the remainder of the mould being re-used green sand.
I had about a 1/2 ton of mansfield moulding sand which was re-used daily and all that was required for use was a sprinkle of water and turning over with a shovel.
The market for precision castings being more lucrative I now only produce using the lost wax process.
Dan.
gunner312
gunner312
Well, I don't use greensand. I use K-bond sand (sand mixed with oil and bentonite clay with alcohol as a kicker.) Once used it requires re-mixing and it's a job to get it mixed cleanly with no lumps. I just got tired of doing it by hand and made this machine to do it for me. I guess at 72 I've become lazy.
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