How can I make a dry ice blasting machine?
I have seen commercial machines that use compressed air to shoot a stream of dry ice (CO2) pellets or shavings at a dirty, oily machine to clean its surfaces. Unlike sandblasting, the CO2 sublimates (goes from solid to gas without passing through 'liquid') and leaves no residue other than the crud it blasted off. It can even be used on machines or electrical panels that are powered up!
But these machines cost multiple $1000s. Anyone have a plan or experience with a DIY version?