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| A bit of casting |
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| Rob.Wilson:
Don't tell anyone cos its a secret ,Wes :lol: :lol: :lol: :lol: a flammable liquid , i use brake/carb cleaner ,,, something light that burn easy ,, graphite powder ,, you have to keep giving it a shake as the graphite settles out and a bit treacle/molasses . the brake cleaner carries the graphite powder so it can be spayed and when set a fire the molasses is baked on sticking the graphite to the surface . Also the burning off of the brake cleaner skin dries the mould . Just something i came up with a bit trial and error :smart: works well for me ,,,, Great on cast iron ,, gives the casting a nice black finish Rob Edit ,, forgot to say i use one of those pump up sprayer to apply it with . |
| Powder Keg:
Thanks Rob :wave: I'll have to give it a try. do you bake your Cores with Molasses also? I have some Sodium Silicate to try out. Just need more time :smart: |
| Rob.Wilson:
I do Wes :thumbup: This is the mix i use 10 parts silica sand ,,,,,DRY 5 parts moulding sand ,,,,,DRY 1 part core binder ,,,, which is a type of corn starch i think Mix above dry Temper with molasses water or core oil (linseed oil ) Core oil dose give a better core , but stinks when baking . Rob |
| Artie:
his sound about right? ..... mixture 50/50% zircon flour and graphite stirred into either alcohol....... :smart: |
| Dean W:
It sure is gonna be pretty on the next pour, Rob. :beer: Your posts are a real pleasure, always! It's good for me to see a persistent fellow at work, too. :clap: Inspirational, and all that, seeing how much work goes into each of these pours, and you just seem to make light of it when you have a little (or big) catastrophe. You just keep at it like you're killin' snakes! Now, is that "B" for Bogs, or for Bandit? :scratch: :) Dean |
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