I’m finish cleaning Aluminum Motorcycle engine parts for a nicer finish after degreasing and washing. My gun has the blue abrasive tank on top. When I turn on the gun the glass bead just pours out the tip. When I apply air pressure it cleans the aluminum part. I believe the tip on the gun is for sand blasting, is there a different tip for glass bead blasting OR is this just the nature of the beast? The on off has only the two settings, full on full off.
Also what will I need to coat the aluminum finish to keep it from corroding?