Powdercoating!

Joined
16 October 2006
Messages
654
Location
Johnson City, TN
So a long while back I impulse bought a powdercoating gun at sears to match the old oven I had laying on my back porch. Well a year or so later I finally moved the oven to the garage and decided it was time to get busy. With winter coming on, I knew I'd have some free time to powdercoat a bit. I ordered some fancy expensive powdercoat from Eastwood that matched my Rio Yellow (according to their color card) and went to work on an old manifold cover I'd bought here on prime. I first used the spray on type "Aircraft Stripper" you buy at Wal-mart and three cans later I was still stripping. FINALLY I had it done and got down to the nitty gritty. I noticed the powder looked a shade lighter than the Rio Yellow, but the color sheet was spot on, so I went ahead anyhow. I must admit the Craftsman gun is well, crap. It was broke right out of the box (the "lock" broke) but fortunately it fit tight enough to not need it. As I sprayed, the PC would go from either almost none, to huge clumps as a result of the "shaking" you have to do. If you buy a gun, but a different one. Anyhow, when I had a nice light coat on I baked it. After an hour had passed and it was all cooled down I ran down to see my beauty and was once again let down. The final color was lemon yellow. BRIGHT lemon yellow. And nearly translucent. Maybe it needs a second coat? I shot a second coat and learned that powdercoating (with this gun) is a one coat deal. Damn.

Well I stripped the cover back down (more cans of crappy stripper) and contemplated what to do. After a few weeks I remembered there was a Harbor Freight store just down the road so I checked there. Amazingly they had a color that looked JUST like the Rio Yellow. It was five bucks. Score! Well I bought it and ran home ready to shoot more powder.

I opened the tub and noticed it was more cheddar orange. Dark orange. In a rare moment of intelligence, I decided to 1st shoot a 1 inch washer I had lying around as a "color test." Who knows.... Well after it was complete, the color turned out to be perfect. I mean, except for there's no pearl, it is SPOT ON PERFECT! Go cheap powder! Well I then shot the manifold cover and it has turned out great! In the last coupe weeks I've also shot the valve covers and they are sweet!! Not perfect, but nice!! Here are my results!

In the beginning:
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The stripper I used this time came in a one gallon jug from Advance Auto and had the considstency of snot (or a money shot...) It worked MUCH better, and in spite of the $35 cost, is well worth it if you have to do many parts as you'll save a LOT of time and effort using it. Paint it on until it is just solid goo!!
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After one coat!
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After a second coat and now taped up and ready to go. It's IMPERATIVE you get ALL old paint off. Powder will NOT adhere like paint does!!!! Also make sure to buy POWDERCOAT tape and high temp plugs!!
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The cheddar cheese orange, about to hit the oven.... It looks like crap at this point!
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The finished result!!
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The color match! Matched under flourescent even!!
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The car it's going on!! hard to believe it was once black!
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SOOOOOOOOOOOOOOOOOOo..........

In the end, lessons learned. Buy a PCgun that is a "top feeder" where the powder sits on top of the gun so you get more uniform results. ALSO buy one that has a "variable voltage" transformer as that will allow second coats.

ALSO, the jelly like stripper is wayyyyyyyyyy better than aerosol! And make sure to get ALL old paint off, even small flecks!

Finally, spray a random piece of metal first to ensure color match AFTER baking (it changes a LOT!) and spray the powder on THICK!!!!!

As soon as I finish my valves I'll put it all together!! (thing go slower when you have one arm....)
 
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HF has a gun.

i did nsxb's brakes and it was a pain in the butt.

4-5 coats each caliper and 15 minutes in a toaster oven:eek: literally took me 2 full days.

came out looking great. I put 2 coats of high temp gloss clear coat and year and a half later they still look good.

i take a peek at them at the car meets every time he i see him.

careful with yours tho, they are not too good with oil and also brake fluid. I would clean them when soft rag and mild soap and water when you need to . the clear coat helps with durability.

your Valve Cover looks awesome!
 
the clear coat adds a nice shine to it.

also it protected the calipers from brake fluid and dust.

the powerder coating itself is not very tough and comes off easily, also it gets dirty with oil and stains. so the clear coat adds a little extra safety.
 
Most good powder coating is harder than hamered hell and it's virtually impossible to get off without messing up the surface it's applied to.
That's part of the purpose of powder coat.
There's a product called "Aircraft Paint Striper" made for polyurathane aircraft paints that will strip anything. It comes in a one gallon tin. It's got the picture of an airplane on the tin with a blue backround. Not cheap but a little goes a long way.
It's pours like warm jelly. It burns in the smallest spec if you get it on you but it works! One coat.
Be sure to warm water rinse it VERY well before drying and proceeding with any paint or powder coat.
Does anyone know of a small "Powder Coat" kit for sale like mentioned above, top feed, variable voltage and/or a supplier of the right colour of red powder that will match the OEM cam covers from the Type-R when cured?
I used to think the yellow was just horrible but, Damn, that looks great. Espically the "no emblem" nose.

Cheers
nigel
 
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Most good powder coating is harder than hamered hell and it's virtually impossible to get off without messing up the surface it's applied to
Cheers
nigel

Hi Nigel, you have professional power coating system confused with a harbor freight / sears power coating system.

also after having first hand expereince with $5 harbor freight power coat paint.... you need clear coat and no, it takes very little to get it off. :wink:
 
Yah the gel stripper is what i used the second time... it burns like hades if it gets on you, i agree!! How is the Harbor Freight powder different?

Its not as tough as the commercial paints. a little brake fluid will make it bubble. also oil stains the paint if not sealed.

a clear coat to seal it would yield best results.
 
Nigel, contact TRG coatings. He is out of NJ and has the correct color red (wrinkle red) for the valve covers. I am dropping off my valve covers to him at the end of the week. He qouted me $80.00 for both covers which I think is fair.
 
Thanks guys, you've answered questions.
Harbour Freight for the P/C kit and TRG Costings for the media. Cool.
Didn't realize there was a difference in the toughness.
There's a guy in Indy where i'm from originally that has a shop on the near west side by the airport that does Indy Car Team parts as well as other bits for other customers. I've used him for scooter frames and his stuff is like steel and some polyurathane paints in that it chips before it comes off. He does a complete scooter frame, all parts for $150
RON, are there any special clear coats that are better than others?, as in how do they hold up over time in the heat of the engine compartment?
I do have OEM Type-R intake covers but i'd like to give my cam covers a go.
Frank, would you have a contact number for TRG Coatings? Do you supose he'd give up his sourse or sell small quantities for guys like me?

Cheers
nigel
 
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Nigel, here is Toms contact number 973-208-6814. I agree with you that the powdercoationg is very tough and durable. When I used to race quads all my frames and a-arms would get powder coated and would hold up even when getting blasted with dirt and rocks. Hope this helps. Frank
 
Hi Nigel

PC is definitely VERY tough and corrosion resistant if using the correct powder. Look at the sexy brembo brake kits.

I choose a high temp clear coat use for engines and calipers. It turned out very nice and still looks great. The clear coat was purchased at a pepboys.:tongue:

I advised to use only water and mild soap. No break cleaners.

Its lots of fun.... until the 6-7th hours and the 4th coat and still 2 calipers to go.

go at it, take your time and the results are awesome!
 
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So do you guys have an oven out in the garage just for this or are you doing this in the house? Does it let off fumes and smell bad?
 
Nigel, contact TRG coatings. He is out of NJ and has the correct color red (wrinkle red) for the valve covers. I am dropping off my valve covers to him at the end of the week. He qouted me $80.00 for both covers which I think is fair.

very interested in it as I have couple scratched valve covers at home right now. Please let me know if they deal with guy from Seattle.
 
So do you guys have an oven out in the garage just for this or are you doing this in the house? Does it let off fumes and smell bad?

i did Gene's calipers in a 20$ toaster oven at the shop.

i plugged it in outside.

if your going to use an oven its better to get a big used one and do all the calipers at once. the little toaster oven could only fit 1 caliper at a time... so 15 min/caliper + cool down and 3-4 coats a caliper.... :eek:
 
do a couple, it gets real nice. my coats where not too thick. i have no idea how it works, it just works for me with 3-4 coats :)

at least with the calipers :wink:
 
Nicely done. I like it. Do you have a pic of the engine bay after re-installation?
 
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