Well I'm not too experienced at modeling yet, but right now I'm working on a simple model, just a straight Revell FW-190 from-the-box. I'm trying out my first attempts at good weathering, and I just finished spraying an aluminum undercoat so I can do salt weathering and make it look like the paint's chipped. I'm about to spray on the colored coat, but I was wondering, do I need to seal the aluminum coat so that when I salt weather it, water won't damage it?