[MattKellett]

Marv - I'd definitely go with what the manufacturer recommends. I was just trying to point out that when the floor is etched, it really doesn't remove hardly any material, basically just breaks the surface. But the last thing you need is lots of little needles- ouch!

When our shop floor was painted, the company that painted the floor used a machine grinder, similar to a large vacuum. Maybe it would be possible to rent one of these to save you some time, I just can't imagine kneeling on the floor with a disk grinder.

I'm sure it'll look great when you have it finished.