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Antique Tractor Paint and Bodywork

Electrical charge

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daniel gillespi

09-12-2004 05:19:39




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has anybody ever used electrical current to get better paint distribution? If so how fdo you hook everything up b/c I would ike to just try it!




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willyz

09-19-2004 04:47:57




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 Re: Electrical charge in reply to daniel gillespie, 09-12-2004 05:19:39  
Electrostatic painting and powder coating are two different ways of applying a finish. While they both use an electrostatic charge to attract the paint to the part the electro-painting still uses solvents as a vehicle for the pigment. Powder coatings a blended with the pigment in the powder itself. Powder coatings come in different chemistries such as epoxies, polyesters, acrylics, and hybrids. Some are formulated for inside use such as epoxies, which will fade and chalk when exposed to UV rays and some are made especially to withstand the elements such as TGIC and Polyester/Urethane powders.
Most of the major machinery manufacturers now powder coat at least some of their machinery line.

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Kendall

09-17-2004 08:52:42




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 Re: Electrical charge in reply to daniel gillespie, 09-12-2004 05:19:39  
Its called Powder Coating. requires special quipment, which can be had at lots of places, including Harbor Freight tools. The finish has to be baked in an oven. All you need is Farmall Red powder and an oven big enough to drive your tractor in or hold your parts. If you live in or near a big city, you will find business that do this stuff for you. Handy if you have small parts. If you want to try this concept using regular spary paint, do a google search on power coating and get info how how its done. The spray gun has a positive charge and the piece being sprayed has a negative charge. May or may not work but sounds interesting.

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CNKS

09-17-2004 17:58:33




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 Re: Electrical charge in reply to Kendall, 09-17-2004 08:52:42  
I believe electrostatic and powder coating are different. It is possible for a hobbiest to powder coat small parts, but a whole tractor is prohibitive. Eastwood has a lot of powder coating equipment -- too expensive for me.



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Dozerboss

09-17-2004 21:05:01




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 Re: Electrical charge in reply to CNKS, 09-17-2004 17:58:33  
They are differant. They may share some of the same priciples with a charge to attract powder. I have owned several items that were powder coated. They faded as fast as non hardened paints, so i never really have understood the advantages, if any, the power coat provides. I thought they were suppose to be more durable than paint.

Due to the fade, i haven't much interest in them or studied them for possible uses. When they first came out they got a lot of press and Eastwood was one of the first out with a hobbiest system in the $300 plus range. Now they are sold as knock offs Like harbour freight does. I wonder if there are better grades, like there are paints?

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GPWT

09-15-2004 10:47:08




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 Re: Electrical charge in reply to daniel gillespie, 09-12-2004 05:19:39  
There are many industrial users of painting systems that use a high voltage electric charge to attract spray paint to the item being painted, but it requires specialized equipment and high voltages that make it prohibitive for home use.



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CNKS

09-12-2004 17:26:13




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 Re: Electrical charge in reply to daniel gillespie, 09-12-2004 05:19:39  
My guess would be that a properly installed system of that type would be cost-prohibitive. But, I know nothing about such systems.



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JD of the Shenandoah

09-16-2004 15:53:34




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 Re: Electrical charge in reply to CNKS, 09-12-2004 17:26:13  
I believe most charging systems for painting are used for dipping the item. Charged parts hold paint. Uncharged parts shed paint. Yeah, real expensive.



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Dozerboss

09-12-2004 22:13:01




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 Re: Electrical charge in reply to CNKS, 09-12-2004 17:26:13  
My understanding of it is that its a dip tank process that saves painting the backsides of components and provides excellant adhesion. Beyond a repainters resources. I don't know if there are other forms of applying Electro static primers or if that is the correct name of these paints. Just what i picked up from reading about chasis coatings.



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