I fabricated some of the tools needed to do the walnut blasting. mainly, the piece that is inserted into the intake port to hold the vacuum/wand assembly.
what shop are you speaking of? I *am* the shop
or are you talking about the shop in dallas? I know them VERY well, and they are happy to let me use their shop..... in turn, they may have 10 potential local customers that may use them for everything/anything else they may need.
I have done this at the dealer (when i was there) i just made my own tools.