John,

5.0 Mustang ran the same story - it is basically a promotional tour for the guys who sell the equipment and explains the works, but no details either on the set-up :))

I wonder what the pressure needed would be - if a regular /good aircompressor (shop air...) would do? Have a setup with an old dive bottle/cast pipe/heavy gauge steel pipe/etc. or such...

Don't know yet how to make a abrasive paste that could be persuaded to move under the available pressure.

Also one would need at least a simple flowbench, but there Lynn or Bill should have something up their sleeves ?:))?

Thomas J.