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  #21 (permalink)  
Old 07-12-2007, 05:55 PM
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the_powder_coating_master is on a distinguished road
Smile Re: Powder Coating graphic designs and pictures

Quote:
Originally Posted by donafams
but wont i need to find some that can take the heat?
I use a special vinyl that can take the heat just fine. although if left on for more than 6 minutes at higher than 200 degrees it can be a struggle to remove it.

Try getting in contact with someone with a vinyl cutter and ask them to use sand blasting vinyl to make your stencils. Its a light green about 1.2 millimetres thick so it can tolerate the heat for longer.

Also try leaving it on and clear over it to give an embossed effect i find alot of my clients like that more than the colour underneath.

I have posted some picture in the powder coating gallery yesterday and the sign with all the skulls on it gives a good example of the embossed look.

Cheers Mate
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  #22 (permalink)  
Old 07-12-2007, 06:59 PM
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Default Re: Powder Coating graphic designs and pictures

ok, im confused... if it can only take about 6 minutes at under 200 then how could i leave it on and clear over it?
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  #23 (permalink)  
Old 07-12-2007, 07:53 PM
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Join Date: Jan 2003
Posts: 321
chromo
Default Re: Powder Coating graphic designs and pictures

I was wondering the same thing when I read that, 200F for 6 minutes.

Well I should have 2 guns this weekend
Maybe I can test a few things and post some pictures next week?

To test the material and glues I would think you can just take a bare steel part and slap on the samples of materials for designs, bake as normal for PC and see what the effect is on the samples. Do they stay in place durring baking or fall off, can they be removed after baking, do they burn up, etc.. etc..
That should be an easy way to test various material, no need to coat the part, just stick on the sample pieces to metal and bake it.
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  #24 (permalink)  
Old 07-12-2007, 11:15 PM
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Default Re: Powder Coating graphic designs and pictures

Quote:
Originally Posted by donafams
ok, im confused... if it can only take about 6 minutes at under 200 then how could i leave it on and clear over it?
LOL ok sorry to confuse.
It is easy to remove before 6 minutes but after 6 minutes it is a real bastard to remove. The viynl wont melt off or anything like that it just sticks on like **** to a blanket.
I've left it in my oven before at 200 degrees celcius for half an hour and it did very little to the vinyl other than make it impossible to remove. so it is perfect to clear over or powder over or whatever you would like to do to it as it won't come off.

Is that easier to understand? Just look at the picture and you will understand.
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  #25 (permalink)  
Old 07-13-2007, 12:27 AM
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Join Date: Jan 2003
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chromo
Default Re: Powder Coating graphic designs and pictures

"200 degrees celcius"

Well that clears up part for me I guess. I am used to F temps and did not see you were saying C temps. I think others may have thought 200F also as did and of course that would be far below the 400F plus temps for curring.

200 degree Celsius = 392 degree Fahrenheit, so I would guess that is in the curring ball park and after 6 minutes a partial cure, peel off design then finish with a full cure right. That would be making more sense to me now.
Also as with base coat top coat, you could do partial cures to set the powder, peel the design and coat again for more colors. Then bake a final full cure when all colors are done.

I've done allot of stuff, but only a few basic powder jobs myself using some-one elses system to show them how it's done.
Tomorrow I should have 2 system of my own, managers special $50 each
Too bad only 2 in stock right now, LOL
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