FORGET SANDBLASTING !
It’s messy - sand goes everywhere. Plus it can’t be used on sheet metal because it produces so much heat when the sand strikes the metal.
FORGET SODA BLASTING!
It is next to impossible to see your work piece project once you start due to all of the dust. Like sandblasting, soda blasting is hard to contain, unless done in a controlled booth. Most paint manufacturers strongly discourage Soda blasting when using their products.