I would like to melt down some scrap aluminium to make some round ingots for machining into pulleys for a belt sander I would like to make.
I have seen You Tube videos where the guy wraps a small amount of some sort of powder into some tinfoil and pushes it down into the molten aluminium, which then melts and the powder reacts with the molten ally and removes the impurities by floating them to the top, which are then scraped off.
Does anyone know what that powder is?
Cheers
I have seen You Tube videos where the guy wraps a small amount of some sort of powder into some tinfoil and pushes it down into the molten aluminium, which then melts and the powder reacts with the molten ally and removes the impurities by floating them to the top, which are then scraped off.
Does anyone know what that powder is?
Cheers