The idea is to keep em raw
Factory raw frames are coated in lacquer to keep rust at bay, the finish isn't very durable and rust soon creeps in under the lacquer
If you just strip paint off it will rust.... quick, as demonstrated ere
Brand spankers factory raw...
Same frame a year later, rust creeping in....
So i stripped the lacquer and polished it, couldn't be arsed to re lacquer it so i just built it back up....
It got rained on a couple of times...
Fook raw... it's now yellow...