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I just got a piece of alumn. and it slides easy but doesnt provide a good seal. i am going to try putting a then coat of j&b weld on it or try to find a tighter piece of copper .. i thought it was steam but i think it is fog from the ice water i put on top... i added some counter weights to my f...

I just bought a 1" aluminum rod that i want to make into a piston. How long should i make it and should i drill any holes in it to make more of a vaccum or what is the best way to make it with just basic shop tools... thanks for everybodies help and soon one day i will have mine running . i am ...

I was wondering if anybody has tried to freeze water in the cooling part or would that not work. any ideas please... thanks

I am not having much luck im getting closer but how tight does the piston need to be to have a good vaccum. i made a piston out of j&b weld. sometimes steam will come out but it won't move the piston is slides easy.