Eaglet,
I spoke with my friend today, what hew does is fairly simple, he is using a large Co2 bottle with valve and hose connector, he made a connection from the hose to a bore guide. He opens and closes the valve as required to cool then runs a dry patch through.
I think a smaller bottle would be a better idea. Here we get very smaller Co2 bottles for making soda water not sure something adapted from that sort of system would work, it would be small.
I spoke with my friend today, what hew does is fairly simple, he is using a large Co2 bottle with valve and hose connector, he made a connection from the hose to a bore guide. He opens and closes the valve as required to cool then runs a dry patch through.
I think a smaller bottle would be a better idea. Here we get very smaller Co2 bottles for making soda water not sure something adapted from that sort of system would work, it would be small.