by hennesse » Fri Jan 25, 2019 10:22 pm
I've been using Ballotini glass beads, 50-70 sieve, Grainger #6ZC14 for most everything.
On really tough painted painted or badly rusted surfaces, I'm using Black Diamond from Tractor Supply. It's pretty aggressive, so I try to get the tough stuff loose, then switch to the glass beads. A better choice might be Ballotini Ground Glass, 25-40 sieve, Grainger #6ZC15
Since this stuff comes in 50 lb pails or bags, you really need to find a local source of supply, as shipping would be really expensive.