Jack shafts, what a concept. Larry, a friend of mine has two truck mounted blaster as you describe. He keeps these going by doing prep jobs at Legoland, Sea world, Disneyland and government places that require minimal impact to the environment. I have used this system to do complete cars but, all the materials get expensive even though I get to use the machine for free. It is still a lot of work so, I just hall everything to my blaster guy and be done with it.
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