casting

Charles Cleland · Post by **Charles Cleland** » Sat Jan 31, 2009 1:55 pm

Hi;
when I started my casting about 35 years ago I could buy green western sand already mixed.As I am trying to get it going again the only way I can buy green western sand mix is to buy sand and bentonite and mix it myself I prefer green sand for the forms rather than the oil based sand. Does any one know what parts bentonite to sand you are supposed mix for the forms?
chaz

Charles Cleland · Post by **Charles Cleland** » Thu Feb 12, 2009 12:24 am

Hi;I found everthing I wanted to know at http://foundry101.com/archive.htm
chaz

steamin10 · Post by **steamin10** » Thu Feb 12, 2009 9:36 am

hey Charles. If you pour Bronze , you should give Oil based sand a try, it is easy to make and is superior to greensand. I have very good detail reproduction, without the moisure blows and steam related problems given to the moisture in greensand for small parts. TTFN

Charles Cleland · Post by **Charles Cleland** » Mon Feb 16, 2009 1:09 pm

Hi; thanks for the advice but the only metal I will be useing will be alum.
chaz

jones · Post by **jones** » Tue Mar 03, 2009 3:38 am

steamin10, do you have a link which shows how to make your own oil based sand?

steamin10 · Post by **steamin10** » Tue Mar 03, 2009 9:59 am

Here is the most used formula, I use a variation of this.

It is not too impressive until the alchahol takes effect in about 24 hours.

http://www.foundry.ray-vin.com/k-bond/k-bond.htm