sll
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Post by sll on Jul 30, 2014 8:23:45 GMT -8
I shot my first coat of paint on our trailer today (Rustoleum Royal blue). Despite my best efforts (and first time status), I have a few runs in the paint. My plan is to sand down after it dries with sand paper before I shoot the second coat. What grit show I aim for? Some places online say 220, others 800 or 1000. Any advice?
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Post by Ross on Jul 30, 2014 10:18:18 GMT -8
220 is fine between the first and second coat. The more coats you add, I would move up to a 320....but it is not necessary. Instead of 320, I will use the worn out 220 paper and it works fine!
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txoil
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1960 Shasta Deluxe 19
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Post by txoil on Jul 30, 2014 15:38:06 GMT -8
What Ross said. Or you can go to an auto paint shop and get a 'nib sander' which is a tiny blade in a small block of wood. Think of it as a razor to shave down the ridge of paint where the run occurred, then you can use your sandpaper to smooth to a level finish.
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Post by vikx on Jul 30, 2014 20:57:27 GMT -8
We've had trouble with Rustoleum and runs as well. We have been thinning with paint thinner but will use acetone next time. It's supposed to facilitate faster drying and less runs...
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bmxovich
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1952 Airfloat Skipper
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Post by bmxovich on Jul 31, 2014 4:42:49 GMT -8
We've had trouble with Rustoleum and runs as well. We have been thinning with paint thinner but will use acetone next time. It's supposed to facilitate faster drying and less runs... That my cause problems in the other direction. Normal paint thinner / mineral spirits is a very slow drying oily solvent, about as weak as you can get. It's ok for brushing or rolling but not for spraying in my opinion. Acetone is at the other end of the spectrum. Very hot, and very fast setting solvent. It will be hard to keep a wet edge and dry overspray can be an issue. Also it can soften or lift old coatings that your spraying over, be that the case. The hotter the ambient temperature the more trouble you'll have working with it. Most good paint stores, or automotive paint stores will sell a medium evaporating reducer / thinner for spraying enamels. I buy them in slow, medium, or fast depending on the temperature. But medium is 90% of what I use. Just talk with a good paint store and they should be able to help you out. |
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Post by vikx on Jul 31, 2014 8:32:11 GMT -8
Thank you very much! We plan to paint today and it is pretty warm here. (high 80s) Will go shopping before we paint...
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bmxovich
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1952 Airfloat Skipper
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Post by bmxovich on Aug 1, 2014 7:12:58 GMT -8
Thank you very much! We plan to paint today and it is pretty warm here. (high 80s) Will go shopping before we paint... Glad I could help. Let us know what you buy, and how it works out for you. Yes, HOT summer this year! Upper 90's in Spokane for the last couple of weeks, with 101* a couple of days ago. Too hot for me to spray, but I need to order our skin first,  |
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Post by vikx on Aug 1, 2014 9:26:46 GMT -8
Went shopping to the local paint stores yesterday and the answer was "paint thinner". They said Acetone was too hot as you had already said...didn't carry anything like medium reducer. I may try once more.
Went to an automotive paint place plus the best paint store in town...
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Post by bigbill on Aug 1, 2014 16:16:31 GMT -8
When you mix acetone with enamel it most likely will curdle. When spraying enamel spray on a very light coat let it become tacky then spray additional coats till you get the coverage and gloss you desire. If you try to spray it thick enough to cover in one coat it will run. I usually apply 3 to 4 thin coats, also don't over thin. On a hot day some times you can spray it as it comes from the can, no thinner. Another thought is to use a pressurized pot or gun instead of a suction gun.
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bmxovich
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1952 Airfloat Skipper
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Post by bmxovich on Aug 1, 2014 19:43:47 GMT -8
Went shopping to the local paint stores yesterday and the answer was "paint thinner". They said Acetone was too hot as you had already said...didn't carry anything like medium reducer. I may try once more. Went to an automotive paint place plus the best paint store in town... Sorry you had no luck in finding a good enamel reducer, shouldn't be hard. Where abouts do you live? I know what most commercial paint company's offer, might help me narrow down a store / brand for you. It's surprising an automotive store couldn't or wouldn't help you. Any automotive acrylic enamel reducer would work, and should come in different temp ranges. I live in the northwest and use Rodda Paints 260 synthetic reducer for nearly all of my enamel spraying. And yes, with Rustoleum enamel as well. It's been a long while ago, but we used to buy xylene for the same thing. It's the main ingredient in the 260 reducer I use now. It really isn't complicated. Your just trying to find that happy medium between slow evaporation and fast evaporation. Your looking for the right tool for the job to minimize issues and make the job easier. |
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Post by vikx on Aug 1, 2014 23:22:00 GMT -8
We did GOOD! No runs and paint thinner, 10%... Thanks so much, Big Bill, instructions well noted. Bmsovich, We are North of Seattle. I have xylene on the shelf, never thought of using it.  Visit if you are close enough... Also would appreciate any more info here to help our members. I'm such a happy camper! |
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Post by bigbill on Aug 2, 2014 5:24:35 GMT -8
You are welcome as always . The trailer is looking good.
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Hamlet
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Post by Hamlet on Aug 2, 2014 7:12:03 GMT -8
vikx - that is turning out to be one beautiful trailer!
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bmxovich
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Post by bmxovich on Aug 3, 2014 16:44:28 GMT -8
Great news, glad you made it work for you. The trailer looks nice. So you live north of Seattle, should be able to find a Rodda paint store in the future. Try thier synthetic reducer #260 next time you have a spray job. Works with enamels, acrylics, polyurethane etc. You'll love it. We'll be at Mt Baker with my wife's compact next month. Poor thing is dying for new skin, so a couple camping trips and the rally before we pull her apart. Maybe see ya there |
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Post by vikx on Aug 3, 2014 21:47:36 GMT -8
Look for this trailer:  Will be at Deming next week and Lynden in Sept. I'll PM you so we can exchange emails... |
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