Painters are a cranky lot!

Let's backtrack a bit. My intent in this thread was to recommend the WD (along with the other products) for coating stored tools after the de-rusting. I know some gun owner guys that use WD to protect their weapons and to prevent rust while in storage, and they seem quite happy with it. I'm sure those that believe it "causes" rust have their experiences, but may not be accounting for other conditions. It's basically a light petroleum oil with a petroleum distillate as a thinning agent. There may be other things in there, but the label doesn't give a clue if it does.

As for Tom's comment about fisheye in paint, there are many more products that will contribute than WD. The fisheye comes about from surface or product contamination wherein the contaminant "pushes" away the paint film, causing the fisheye (looks like a small crater in the surface). If someone were to spray WD, or any other aerosol lubricant for that matter, during the prep phase of the paint process, or near the air intake of the spray booth or area during application, it could cause fisheye. But so can sloppy preparation by the painter. If he doesn't do a thorough job of wiping down with a "prep-sol" type product before spraying, any oil can contaminate the surface. Another source is oil from the compressor if the air system doesn't have adequate filtering. That'll blow oil right into the paint as it's applied. What's even worse than WD is Armor-all, or any other detail product that contains silicones. Silicone is much harder to remove than petroleum lubricants. Some of the "wax type" surface products (they actually identify themselves as Non-wax, typically sprays) contain silicone. Another way to get silicone in the mix is by using rags that have been run through the dryer with a softener sheet, those contain silicone.

Here's an interesting picture for you. You're all set up in the hobby shop to do a little spraying. You've rigged up an exhaust fan, with filters, on the shop door and a filtered intake panel in the shop window. You think you've done a pretty good job of creating a Rube Goldberg spray booth. But the world is conspiring against you. Across the shop is one of your rides that you cleaned earlier in the day, and of course you Armoralled (or whatever your favorite tire blackening agent) the tires to make it look sharp. And as you're getting ready to spray the parts you've just carefully prepped, the wife starts to dry a load of laundry, and the dryer vent just happens to exit the house near the window you're using for your air intake. Add to that, your loving progeny is out there spraying WD40 on his bicycle chain because you've taught him the importance of maintaining his ride too. Now, when your freshly painted part has a surface that looks like the face of the moon, who ya gonna blame?