After a Day of welding and giving myself a bit of "Sunburn" I lightly used flap wheels on the welds just to even it out a bit and several styles of wire brushes to remove all the loose material from the rails in prep for POR-15

I really like the stuff but messy! and the S**T dont come off your skin if you let it dry. I brushed the first coat on to get around and behind all the corners and cubbys. the second coat i sprayed with my primer gun. Ill say again i do like POR-15.
for this type of build.