A couple of days ago I remarked that I was seeing little flakes of what looks like brass in the paint, in fact after spraying the A-7D there were a lot of these flecks present. Initially I put it down to maybe the coating on the inside of the paint cup on the Iwata Revolution CR that I used, however thinking about it today I bolted an external air tank to my compressor years ago and if it doesn’t get drained of condensation regularly you get a pool of rusty water lying on the bottom.
To test this theory I returned my Iwata Smart Jet compressor to its original factory spec (bypassing the air tank) and using the Iwata I suspected of shedding metal, I sprayed a test piece with Tamiya XF-1. Afterward I couldn’t see any evidence of these flakes so maybe the tank was the problem, either way I’ve removed it as it never seemed to hold enough air as the compressor always seemed to be kicking in during a spray session anyway. The whole point of fitting it in the first place was to reduce wear and tear on the compressor by holding an adequate supply of air but the tank never seemed to.
I’ll keep watching for flakes in case it wasn’t the tank however if it proves to be the airbrush I may as well get a new one as a replacement body alone is around two thirds of the retail price.