question about valspar

[buckeye 5]

i just painted a few sheet metal pieces yesterday and had some dust settle on the paint. my question is: will these little bumps buff out, or should i lightly sand and recoat? how long should i wait to buff or sand?

[rmaynard 15,715]

Did you use the spray cans or spray from a gun? If using the gun, did you use hardener?

If you used the spray can, let it dry for 48 hours, then lightly sand with 320 grit wet sandpaper. Follow that with 400, then 600. Buff it up and see what you've got. If the paint was not put on thick enough, you may have to recoat.

If you used a gun, follow the directions on the can for drying time. You may have to wait weeks if you didn't use hardener as Valspar RS takes a long time to dry. If you used hardener, follow the same procedure as above for spray cans.

Bob

[buckeye 5]

thanks for the info bob, i used the spray can :omg:

[Raider12 13]

thanks for the info bob, i used the spray can

With using a spray can, you want to make sure you don't sand to much. Might want to start with 400. You don't have that much paint on the metal out of a spray can compared to a spray gun. You can through the color fast.

Denver

[buckeye 5]

i'll keep that in mind, thanks. i think i might try sanding then recoating. i knew i shouldnt have painted outside with even the slightest breeze. :omg:

[The Toolman 22]

i'll keep that in mind, thanks. i think i might try sanding then recoating. i knew i shouldnt have painted outside with even the slightest breeze.

The kitchen table is so much better :D

[Ken B 3,164]

When wet sanding I always start with the very finest I have. Sometimes 800 or 1000 does the trick.

[Save Old Iron 1,566]

little bumps

The answer really depends on how dry the paint film was before having "stuff" land on it.

If the entire thickness of the film was wet enough, the dust may hay penetrated thru the film down to the base material. If you remove the dust, you leave a microscopic hole in the film down to the bare metal. No amount of buffing or sanding is going to address that issue in a single step.

If the surface of the paint film was partially dry, The dust may have just settled on and adhered to the film, not penetrated thru it. Allowing the film to dry completely, you may even be able to brush off the dust and a light buffing, your back in business.

I guess its the difference of a bug walking across the film when its wet or partially dry.

These two types of defects need to be addressed in different ways.

If it is a bump issue, let it dry a week, scuff it up with a green scotbrite pad and repaint. If perfection is required, sand down to the primer and repaint the top coat. You did prime, right ?

:omg:

[Butch 194]

Chuck great artist rendering!! It's something I understand!!

Butch

[Raider12 13]

If you have to recoat the finish. Make sure you read the lable to see how long you need to wait before recoating. If you recoat to soon, or it will be a disaster!

Some of the spray can paints are lacquer based so they will dry fast. And you can recoast with in a few minuets of each other. BUT.... once the finish is dry but only hours old, if you recoat the lacquer will attack the finish like paint remover. NOT A GOOD THING

[DMK855 15]

Pretty sure the recoat times on the Valspar RS are within 3 hours or after 48!! I know in the cooler temps even 48 isn't enough!! Trust me!! :omg:

[buckeye 5]

update; chuck to answer your question- yes, all parts are taken down to bare metal. prep, primed, and painted. after sitting for almost 2 1/2 days, it has seemed to smooth itself out for the most part. i think that buffing it in a couple weeks or so will yield good results. this valspar seems like a different animal than most paints. it seems to orange peel very easily, yet takes forever to cure. i have found that there is no room for error when selecting the proper distance for applying, and their is a fine line between to much and too little. thanks for all the replies, the L157 is coming along nicely.

[Raider12 13]

Every paint is different. But usually what causes "orange peel" is the tempiture your spraying at. Or the surface your painting is to warm. Orange peel is the paint drying t fast before it has a chance to "Flow" out smooth. (Not an uncommon problem). You want do ypur painting in the shade and after it flows out smooth then put the itmne in the sun to dry. Even in the sun, it will appear to soften at first, be patient... it will set up.

[Horse Fanatic 49]

If you're sanding and buffing paint, wet sand with 1000 grit or finer. 320 or 400 on new paint is way too course!

[rmaynard 15,715]

If you're sanding and buffing paint, wet sand with 1000 grit or finer. 320 or 400 on new paint is way too course!

Since he is going to repaint anyway, why not knock down the dust bumps with 320 instead of working his butt off with 1000?

Bob