Well after umpteen years of wondering how I'm going to make these heads, resin bond sand is what the big boys use. Just an idea to throw out there see if anyone salutes or fall over laughing.....
what about using sodium silicate aka water glass. cure it pull pattern?
Here are some pics
These are Villier's 49-125cc heads, rare as hens teeth (well good ones) well maybe John or Graham have a dust bin full of these in good nick?
what about using sodium silicate aka water glass. cure it pull pattern?
Here are some pics
These are Villier's 49-125cc heads, rare as hens teeth (well good ones) well maybe John or Graham have a dust bin full of these in good nick?
oldgoaly, proud to be a member of MetalworkingFun Forum since Jun 2013.