I considered/am considering Soda Blasting my Tiller actually..biggest claim to fame i've heard for Soda in my book (in addition to the ones already listed) is the ability to blast things that are assembled....For example, my tiller...no way would you want to try that with sand as the sand would destroy the seals and work its way into every bearing & gear/chain box there is. With soda all you need to do is flush the oil and refil with new and pump a few new shots of grease into every bearing after you paint it.