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-   -   Krylon rubs off plywood as black dust (http://www.diychatroom.com/f4/krylon-rubs-off-plywood-black-dust-94420/)

diyrocks 02-03-2011 12:36 PM

Krylon rubs off plywood as black dust
 
I've been trying to turn 8 plywood platforms black. I stained them with Minwax but I didn't realize stain doesn't behave like paint and I made a mess. I removed the stain with mineral spirits, sanded the plywood, removed the sanding sawdust with wet rags, and let the plywood dry for a day or so before I spraypainted them with about 4 coats of flat black Krylon Fusion. After about 20 hours I can still run my finger along the plywood and pick up quite a bit of black dust. I had the exact same problem with a small MDF bookshelf I built a few years ago. It produced that same black dust for many months until I finally gave it away. Should I spray it again with Krylon Crystal Clear to seal it?

Ole34 02-03-2011 01:56 PM

you need to post some photos because at this point I am having trouble believing you......Krylon fushion will stick to just about anything.......here's my basement shop............I mixed 1 gallon of oil poly with 1 quart of oil paint and a quart of Black stain then added paint thinner .........2 coats over bare wood and its been 4 years of HEAVY use and it still looks 100%............btw the top of my bench is cheap plywood but my SUPER COATING turned it into SUPER PLYWOOD lol ................do not attempt to experiment like I do, I am a seasoned professional and you might hurt yourself ok


P.S

i did this during the dead of winter and it took my potion 2-3 days to dry ..........lol


http://i614.photobucket.com/albums/t...5/P1010024.jpg



http://i614.photobucket.com/albums/t...5/P1010023.jpg

Ole34 02-03-2011 02:00 PM

here then i added this part

http://i614.photobucket.com/albums/t...5/P1010040.jpg

housegsx 02-03-2011 02:01 PM

Does the product also have a primer available? And isn't that product for plastics?

The only other thing I can think of is you may be holding the can too far away and/or putting the coats down too light.

240sx4u 02-03-2011 02:02 PM

I had a similar problem when it was too cold in the garage when I painted.

Gymschu 02-03-2011 02:04 PM

Wouldn't it have been far easier to just brush and roll with some semi-gloss Black latex? Spraying it with spray cans would take forever, produce some nasty fumes, and produce inferior results in my opinion.

Ole34 02-03-2011 02:20 PM

we the people demand PHOTOS !!!

diyrocks 02-03-2011 06:00 PM

2 Attachment(s)
Quote:

you need to post some photos because at this point I am having trouble believing you
OK, here they are. They look fine to me but when I rub my hand across them I get black dust on my hand. I don't want to get black dust all over the stuff I put on them. The photo of my hand is after a single pass over one of the platforms. They were spraypainted about 24 hours ago.

Quote:

Does the product also have a primer available? And isn't that product for plastics?
The bottle of Krylon Fusion says: "FOR PLASTIC, METAL, WOOD, WICKER, MORE. NO SANDING OR PRIMING"

Quote:

I had a similar problem when it was too cold in the garage when I painted.
I did this in direct sunlight in probably 80-85 degree weather.

Any ideas? As I said, this is the exact same thing that happened to me with Krylon and MDF a few years ago. The black dust never disappeared.

Ole34 02-03-2011 06:20 PM

i though you stained them black first then wiped it off with thinners??? why are they gray???

Ole34 02-03-2011 06:25 PM

paint is prob rubbing off cause its a matte finish........ go get some semi-gloss then re-do ...............lol i feel bad for you cause you been goin through hell with these boards......dont worry though this will all be figured out SOON !!! ............






i dont use much flat spray so im really not sure and im kinda on the fence about my response above..... wheres moderatin boss man when you need him?

diyrocks 02-03-2011 06:30 PM

Quote:

i though you stained them black first then wiped it off with thinners???
I did, then I sprayed them with flat black Krylon Fusion.
Quote:

why are they gray???
It's kind of a reflection. Hard to describe. When they reflect the sun at a certain angle they look gray.

Quote:

paint is prob rubbing off cause its a matte finish........ go get some semi-gloss then re-do
Oh c'mon man. Flat rubs off but semi-gloss doesn't? That doesn't make sense, does it? I sprayed the plastic fender flares on my Jeep at the same time with the same stuff and it's not really rubbing off like this. Maybe 5% as much dust comes off when I rub my hand across it. I think it has to do with the wood, not the lack of glossiness of the paint.

Ole34 02-03-2011 06:43 PM

ill get back to you later.............i just sprayed some flat black in the basement so i have to dry it now and test it............almost there

lol@flat rubbing off...........im throwin ideas out there cause i never seen what your goin through so now im testing myself cause i also want to know ..............sometimes im here to help ya know:thumbsup:

diyrocks 02-03-2011 06:49 PM

Thanks a lot Ole34. I was just able to remove over 95% of the black dust with a wet rag. I think it was just some kind of wood dust. I have a slight lint problem now from the rag but I think I'm calling it done. I'm definitely still interested to see what you discover with the flat black Krylon though.

For the future, what would you guys say is the best way to turn a piece of plywood opaque black for indoor furniture use?

Ole34 02-03-2011 06:58 PM

Quote:

Originally Posted by diyrocks (Post 584202)
Thanks a lot Ole34. I was just able to remove over 95% of the black dust with a wet rag. I think it was just some kind of wood dust. I have a slight lint problem now from the rag but I think I'm calling it done. I'm definitely still interested to see what you discover with the flat black Krylon though.

For the future, what would you guys say is the best way to turn a piece of plywood opaque black for indoor furniture use?


krylon flat black?? ............lol




back to the basement

diyrocks 02-03-2011 07:15 PM

LOL indeed. :) Any other opinions on this?


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