@ Work:
I have purchased soda blasters. They were used with a large compressor ( a trailer mounted IGR, seems like in the neighborhood of 185 CFM). The soda product we used is made by Arm & Hammer (
go figure) it’s primary function was/is to remove graffiti spray paint, for this application it worked well. The orignal paint used in these locations was a three part epoxy and tougher than the-hubs-of-hell, if the nozzle did move quick enough it would lift the paint-off down to the bear metal. They also make a soda with aluminum oxides added as an abrasive, I would used this product to remove paint/job.
Nice thing about soda blasting is that we got no headaches from DEA, we simply washed it down the drain, being a government agency we are constantly under the watchful eye of the public.
Not sure about the smaller units, but soda blasting is the way to go, as long as you enough CFM to push it.
Good Luck
js