I've seen nozzles for sale, but, from what's on the Q&A for that portable blaster I got, none fit. Not sure if that's true or not, could be a case of Princess Auto's online support not knowing and saying no to be safe. Ideally I'd like to change the nozzle and use Soda. Environmentally safe, and after a rain fall it's gone. Walnut is my 2nd choice for about the same reason. Walnut grit is better than the full sized walnuts we have falling out of trees and hitting the cars.
I work with appliances, so, plan is to get an oven or washing machine box, cut half of one side out, put a small table inside and blast away. All the stuff at the bottom I'll probably reuse. First job is to clean my car rims. Mostly brake dust and a few blemishes on the surface, probably clean and plasti-dip them the aluminum/silver colour. Not polished now anyways just need them cleaned for painting and my small pressure washer isn't strong enough. After that, I want to clean/paint the engine on the bike. Bike is basically rust free because sat in a barn in 1989 so, mostly just cleanup.
Car though, few spots of rust need dealt with, for which I'll need something more aggressive.
Princess auto sells 50lb bags of crushed glass (20/30 or 30/60 grit) for $10. Copper slag for about $15. Walnut $40. Soda $80. Steel and the Aluminum is like $100. I'd rather stay on the cheap end of things.
So, Walnut for Aluminum is ok... what would glass do? I saw a YouTube video doing aluminum, and came out looking like a rough textured satin finish which was kinda nice. Too bad no before/after chart of different metals with different media used.
For the car, few heavy rusted spots I guess the copper slag?