On Dec 12, 8:49*pm, Ignoramus22753 ignoramus22...@NOSPAM.
22753.invalid wrote:

Attempts to do it with a wire brush on a 4.5" angle grinder were kind
of successful, but too slow and painful.


Any ideas?

i

Hot air gun or propane torch on the paint and then wire brush or
scraper. Just make sure you will not blow the tank up from fumes. So
use some CO2 or something to displace the air in the tank.

Dan