Yes aluminum oxide would be the fastest to remove powder coating or garnett as well but alox tends to cut quickest. As mentioned sometimes chemical stripping or burning off is faster overall.
I think the dustless blasting companies are excelling at marketing what they sell. If i were in his shoes I would consider trying to secure business, discuss with other dustless blast operators, and look at lower cost equipment options like a water injection nozzle and dry blast pot. Water...
Sand definetly is not ideal but if you can meet the safety requirements it is still allowed this article gives update information on the current safety requirements.
Something else to remember is if you can get a hold of a two stage compressor they provide more air per motor horse power. Additionally a reciprocating compressor is typically most cost efficient for smaller compressors (under 25 cfm) . If you want to blast fast you need a lot of cfm (like 100...
While this is older one thing I didn't see covered is that if your spraying solvents you would want to consider an explosion proof fan as most fans do not isolate electric components from the material your spraying. With solvent materials they could come in contact with the electric source and...