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Spray primer question...


orcsoul
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So today I thought i'd be lazy and try my hand at spray priming some of my as of yet untouched 'test' mini's... of which all are plastics from GW... went out and got me a can of black duplicolor sandable, set my little station up, shook the can up real well for a while, and started sprayin from about 8-10in away in light coats.

 

After maybe 4 light dustings of primer per side of the figure (questionable moment one) the figures were by and large evenly primed with only the difficult to get to undersides left with patches of unprimed surface. Deeming that acceptable, I departed for a number of hours to let the primer dry and set on the figures.. I get back after letting them dry indoors under constant air flow for a good 6 hours or so, and find that the primer hardly managed to adhere to the plastic. It's hardly more than a thick black coat of dust on the figures that rubs off almost in its entirety when touched. (questionable moment two)

 

Is it something i did wrong? Something wrong with this specific can of primer? Something about plastic that duplicolor primer doesn't like?

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So today I thought i'd be lazy and try my hand at spray priming some of my as of yet untouched 'test' mini's... of which all are plastics from GW... went out and got me a can of black duplicolor sandable, set my little station up, shook the can up real well for a while, and started sprayin from about 8-10in away in light coats.

 

After maybe 4 light dustings of primer per side of the figure (questionable moment one) the figures were by and large evenly primed with only the difficult to get to undersides left with patches of unprimed surface. Deeming that acceptable, I departed for a number of hours to let the primer dry and set on the figures.. I get back after letting them dry indoors under constant air flow for a good 6 hours or so, and find that the primer hardly managed to adhere to the plastic. It's hardly more than a thick black coat of dust on the figures that rubs off almost in its entirety when touched. (questionable moment two)

 

Is it something i did wrong? Something wrong with this specific can of primer? Something about plastic that duplicolor primer doesn't like?

 

 

Did you clean the minis or the sprues before you primed them? They may have had mold release still on them which could have caused your primer problem.

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What were the weather conditions like when you were priming? The affect you mention happens most often when the paint dries in the air before it hits the mini, causing a dust-like coating instead of the nice, even coverage. Maybe you were farther away from the minis when you sprayed than you thought. That would also cause the problem you describe.

 

Try this. Get an old pop bottle and glue a mini to the cap. Spray in light coats just a bit closer than you did yesterday, turning the mini so it is evenly coated. Let that dry and see what it looks like afterwards.

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Hmm I didn't think about the paint drying before hitting the mini, Thanks! ... I'll definately give that a second thought and spray a bit closer next time I feel like having spray primer blown back in my face by a sudden breeze.. lol... washing that stuff out of your hair and nose is quite fun.

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Hmm I didn't think about the paint drying before hitting the mini, Thanks! ... I'll definately give that a second thought and spray a bit closer next time I feel like having spray primer blown back in my face by a sudden breeze.. lol... washing that stuff out of your hair and nose is quite fun.

 

You don't get your face on top of it! How close do you hold the things when you prime? Inhaling that much primer can't be good for you.

 

BTW, I've used dulicolor sandable in Florida's humidity and it still behaves pretty well. The only time I've had the problem you describe was with Armory primer. Could brush it off with a toothbrush. I think in my case it was a combination of a bad can of primer, not enough shaking of the can before spraying, and holding it too far away.

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Oh I was holding the can itself pretty close to my body yea, 3-4 inches from me maybe.. then the wind blew in a bad direction and it turned into a momentary self priming job. But the figure itself i hafta guesstimate was closer to a foot from my body. I just happened to be in the wrong place at the wrong time when that freak breeze kicked in yesterday.

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Primer in the face is better than the blast of spray paint stripper I got in my eyes.

Ever had your eyes swabber out in an ER, not fun, not fun at all.

 

Sounds to me like a case of spraying to far away from the mini and yes, Duplicolor is meant for metal autobody priming, though it is my favorite black primer for metal minis (favorite white is and will always be Tamiya). Krylon black primer works well on plastics.

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Okies.. if Duplicolor is good for metal/pewters.. got any suggestions for Plastics? Krylon is good for them? Looking for quality with spray primers that are good on plastics... and if Krylon is the way to go, which specific Krylon is it? They make like a dozen different Krylon primer variants. Or would you guys suggest the GW Primer for plastics? Though I've yet to see that, I imagine for the size of the bottle you're paying way too much when compared with Krylon or another brand.

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