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As anybody ever tried painting baked enamel aluminum signs with one shot. Would it be just a matter of lightly sanding and painting. Any help would be appreciated...
------------------ Mario G. Lafreniere aka Fergie.
mlfergie@cancom.net Chapleau, Ontario home of "The World's Largest Game Preserve" Winter is near,in Shania Country. Farewell Mosquito, here comes the Snow!
I spray factory-painted aluminum often, with both lettering enamel and acrylic enamel, and yes, all you have to do is lightly sand it thoroughly first, although if you wipe the surface with lacquer thinner after you sand you will improve adhesion even more.
Sand with 400 or 320, either wet or dry, or use a red scuff pad (like Scotchbrite). Thin lettering colors with V.M.&P. Naptha for spraying.
Brad in Arkansas
------------------ Brad Ferguson 4782 West Highway 22 Paris AR 72855 501-963-2642 signbrad@cswnet.com
Posts: 1230 | From: Kansas City, MO, USA | Registered: Nov 1998
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Brad has the right idea, Mario. The only other problem you might run into is that some baked enamel panels have wax on them. I'd suggest that you also wipe them down with an automotive wax remover before you sand them. If you experience "fish eyes" from silicone wax, add a little "Smoothie" to your paint. You can also get that at an automotive paint store.
Jerry Mathel Jerry Mathel Signs Grants Pass, Oregon jmathel@grantspass.com
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Posts: 916 | From: Grants Pass, OR USA | Registered: Dec 1998
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The only thing I can add to the two previous post is that if you spray the panels, use xylol (xylene) for your thing. You will have a much better finish. Just be sure to wear the proper protection. Xylene is not something you'd want to have in your lungs.
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Just wanted to add something about the use of "smoothie" or any other fish eye remover. Avoid it at any cost. All it will do is cause you grief in the future, especially if added to paint that is going to be sprayed. If you use it once, in a closed environment (even a spray booth) then you will probably have to use it forever. All Smoothie is is a silicone based product that you add to paint so that the silicone on the surface to be painted won't cause fish eyes. The silicone in smoothie will end up on every surface of the room in which the spraying occurs and will cause fish eyes to appear on future jobs even if they are silicone free to start with. The best way to eliminate the occurance of fish eyes is to properly clean the surface with wax and silicone remover.
Just my experience from 25+ years of spraying vehicles. (the last 10 years being smoothie- free because I built a new shop)
Trust me on this..you won't regret it!!
------------------ Dave Grundy shop#340 AKA "applicator" on mIRC "stickin' sticky stuff to valuable vessels and vehicles!" in Granton, Ontario, Canada 1-519-225-2634 dave.grundy@odyssey.on.ca www.odyssey.on.ca/~dave.grundy "A PROUD $ supporter of the website"
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I thought Dave G.'s post was interesting in regard to spray painting with Smoothie. A couple of years ago I happened to be in the high dollar body shop when the supplier was trying to sell 'Wow!' fish eye eliminator to the owner. The owner explained that if he used the stuff, even in the paint room, it would work its way throughout the shop. I thought he was exaggerating, but he assured us he was not.
This reminds me of the fire ants. They are in epidemic proportions in many states, though not yet so in Arkansas. However, just last week the Paris Express (we call it the Paris Excuse) carried an article with a diagram showing where the first mounds have been discovered, on a couple of city blocks near the hospital. The forest service said there's no real way to stop them, only to slow them down. And I know the idea of spraying them with Wow! or Smoothie is adsurd, but the idea did occur to me.
Does anybody know why silicone repels paint? When you look at a fish-eye develop, it almost looks like an electrical effect. And no, I don't lie awake at night thinking about fish-eyes. I think about the fire ants.
Brad in Ark.
------------------ Brad Ferguson 4782 West Highway 22 Paris AR 72855 501-963-2642 signbrad@cswnet.com
Posts: 1230 | From: Kansas City, MO, USA | Registered: Nov 1998
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Brad, Jerry and Glenn are all on the right track. * lightly sand * solvent wipe with xylene or VM&P
* Adhesion, color and gloss retension will be enhanced with the use of 4007 Hardener. Be careful not to catalyse more than you can use in a hour or two; it will start to set up and affect the flow.
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