I noticed the other day a checker plate deck I painted 18 months ago is starting to rust on the bottom. It's disapointing as I had it sandblasteted, 3:1 expoxy primer then a 1:1 polyurethane top coat. I'm thinking the reason is I didn't put enough on in this area due too conditons in the shop, lighting, prep and .... simple lack of experience using product! I painted a few things since with this paint(seed drill fert. box, truck mirror brackets and tool box) and got much better results. Unfortunately the 1st items were some of the biggest. Also I notice this stuff though a durable hard finish does chip. The other part of the truck deck that needs doing I probably will just use an enamel paint top coat. I'm not sure if $$ ureathane paints are the way to go on equipment parts that get nicked and banged up all the time and need "fix ups". A tractor hood and fenders and things like that yes I can see it being an excellent use for it but areas that are prone to damage, scratches, and what not seems like it may not be the way to go.
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