Wet sand blasting??

[51 MERC-CT]

Sounds like you were doing some 'vapor blasting' in Southington.

 

[frnkeore]

Glass bead is not aggressive enough (wrong media) for the removal of epoxy paint.
That, along with excessive air pressure is a recipe for disaster.

That may be but, it was the only thing available.

The aluminum I was working with was old traffic signs. They were free but, I didn't want the printed surface to show. It was in about '69 so, I assumed epoxy, rather than anything else available, in that day. But, my point is, that anything that peens a surface, will expand it, in relation to the opposing side and to be careful with thin sections of sheet metal.

 

[cmbrucew]

Industrial painting companies used wet blasting when the AQMD squalked about dust.
After a while they went back to the dry sand.
Bruce