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Powder coating durability ??

I was the member who stated it may not hold up to UV very well & that is your basic powder. Yes you can pay $3 a pound or $50 a pound for powder. I have even used some glow in the dark powder and $50 may buy you a few ounces of that. The powder i would think most here are using is the cheaper stuff. I formulated metallic powder coatings for ten years. was a powder coating tech for ten before that. I was amazed and bought into it just like many others and have used it for my own projects only to be disappointed when it chalked, faded or rust formed under a tiny chip and caused a very large section to pop off. Like all things in this world you get what you pay for and there are low & high end powder coatings. you must also be careful because the company I worked for would lie the UV rating. I still like powder coating cause its easy but i choose where I use it more carefully now.
 
If done "right" it will last forever !!
 
The stuff that last forever is that gold baked on wet spay chevy put on those iroc wheels or the paint that is on saw blades. Now that paint is applied wet and will not dry ever unless baked. I have heard the above statement many times from powder coat sales people.
 
I thought I heard my ears ringing! :icon_winkle: Sorry for the delay. I don't get onto FBBO that often.

First off, thanks to jessipup and RustyRatRod for the mention. I picked out a few of the responses above and will add what I can here.


You must have a great wife to let you cook car parts in her oven. I remember someone talking about the UV rays affecting durability also. Didn't know if it was because of poor prep or just that powdercoating wasn't the greatest for this application.

It's not so much the prep or the parts that affect powder coating's UltraViolet stability, it's the powder itself. Most powders formulated for automotive / outdoor use are already UV stable -- hybrids and epoxies are generally not recommended for automotive applications. With few exceptions, a good powder clear coat on top of your chosen color(s) is all you need to keep the parts UV stable and looking fantastic for many years. Mainly you will see oxidation after a few years (or following long term exposure to a lot of direct sunlight) on silvers, golds and chrome-looking powders; they oxidize because there's real metal in the powder. If it's not cleared, you will eventually end up having to polish it.

Dude look up Cudachick She knows all there is to know and if you decide to farm it out Phoenix powder coat is the only company I would consider. Top shelf folks, top shelf work and a FBBO member

Thanks again pup!!! :-D I really appreciate the plug doll but I need to clarify that Phoenix Powder Coating is in New Jersey, has only been open for a couple of years, does not do any custom work or specialize in Mopar parts (to my knowledge anyhow) like I do, and has absolutely NO affiliation with my shop in any way, shape or form.

I have owned and operated Phoenix Specialty Coatings in Greenfield, Tennessee since May of 2007. The majority of my business comes from FABO members and has for several years now.

Curing the parts in the oven does create quite the stink! I don't know how much you were quoted for coating your parts but if you have the room and some time, doing it yourself is easy and you can achieve decent results. If it fits in your blast cabinet and oven, it ain't rocket science.

That's how most professionals start out, as a hobby working on our own cars. I will not completely agree that it's always easy or that you can achieve decent results without any practice ... and to be totally honest, some of the jobs I've done in the past probably couldn't even be attempted by a rocket scientist. LOL!!

ragtop, I recall we talked about some work on your Satellite a couple years ago. Just for fun, I see your little black brackets and will raise you a few teasers just as an illustration of what can be done with powders :love5: ...

Finished! (6) - Copy.jpg016 - Copy.jpg072 - Copy.jpg010 - Copy.jpg019 - Copy.jpg042 - Copy.jpg039 - Copy.jpg027 - Copy.jpgget-attachment (4).jpgPost-assembly pic.jpg


It's as durable as the preparation is good. I've seen some Powder coating blow off fairly easily, some, is impossible to get off as it was put on so good!

So true Donny! And I can tell you with certainty that a good, long-lasting job was prepped, sprayed and cured properly. If you have powder coating that chips easily, flakes off in sheets or chunks, looks or feels bumpy, orange peels (a little orange peel is normal in powder but a LOT isn't), some parts are shiny and others are not, etc., then there was some problem -- or a combination of several -- that caused the issue(s). Most can be attributed to substandard or incomplete prep work.

The way I understand it is, powdercoat is much harder than paint, so that makes it brittle. You wouldn't want to powdercoat say, a frame for instance, since it will twist and tweak and possibly crack the powdercoat and cause it to get contamination under it. I may be wrong about that, but that's always been my understanding.

I'm not 100% sure. That's why I said "it's been my understanding" because I'm not sure about it. I DO know powedercoating is tougher than paint so it's stands to reason it cannot stand flexing as much. I wish Leanna would chime in on this. She is the Mistress of Metal.

Powder coating is much more flexible than paint but, again, a quality job requires quality prep and finish work. Curing for too long or at the improper temperature for instance can make powder coating brittle, change the color, chip easily, and even adversely affect the metal itself (especially when working with alloys such as rims).

... I was amazed and bought into it just like many others and have used it for my own projects only to be disappointed when it chalked, faded or rust formed under a tiny chip and caused a very large section to pop off. Like all things in this world you get what you pay for and there are low & high end powder coatings. you must also be careful because the company I worked for would lie the UV rating. I still like powder coating cause its easy but i choose where I use it more carefully now.

If a tiny chip resulted in a big section of your powder falling off, you probably had oil, residue from the blasting media, undissolved solids in your rinse agent, or cured it too hot or for too long ... but without seeing the part it's tough to tell from a description. If you run into that again in the future, shoot me a few pictures and I can try to help you figure out the source problem. Most likely it's NOT caused by cheap powder.

I'm here to help if any of you need it! Feel free to shoot me an email, give me a call or send me a PM. Now that I just finished up my first job for MarPar, a FBBO-exclusive member who isn't on FABO lol, I guess I'll have to check in here more often now. :icon_lol: Just wait til you see his 6-color MP valve covers heh hehhhhhhhhhh ... they'll have a cameo spot front and center on my website soon but he gets to see 'em first.
 
they look kick ***!! Leanna's work is top-notch!

she took what was in my head and put it on the VC's exactly how i envisioned it.

i will recommend her to anyone lookin' to do powder-coating!! ill put up a thread as soon as they arrive to me and i can install them on the olde GTX'er.

thanks again, Leanna!! you're da best!!
 
they look kick ***!! Leanna's work is top-notch!

she took what was in my head and put it on the VC's exactly how i envisioned it.

i will recommend her to anyone lookin' to do powder-coating!! ill put up a thread as soon as they arrive to me and i can install them on the olde GTX'er.

thanks again, Leanna!! you're da best!!

Mario, I'm delighted that you're happy with what you've seen so far! Thank you kindly for the wonderful comments sir < curtsey > Just wait though -- the pictures I sent you hardly do them justice. I can't wait to see them on your fine GTX ... and I'm sure with the way they turned out they'll be prominently featured in several places on my website.

Just one thing I have to clarify though: YOU'RE da best! :icon_lol: If it wasn't for you, I'd still be waiting for my first FBBO customer.

So ... are you going to give these guys a tease or just let them stew a few days??? LOL
 
I've been powdercoating and liquid coating for about 20 years now, high volume automated systems for OEM manufacturers.

I'm almost all powder in the past 15 years as it has fit the needs and allowed us to get away from all the dangers of industrial liquid coatings, plus the stack permits etc.

I currently run a non phos conversion coating as part of my prep, nano technology. Zirconium conv coating, the stuff flat out rocks for corrosion prevention in the case of a scratch or chip that exposes your bare metal.

I run mostly premium weathering TGIC polyester's these days or as the market refers to them "super durables" for the best UV resistance.

We generally coat over a million parts per year in my current system. Back when I used to care more, I used to figure out how many football fields worth of surface area we coat per year. But now it's just so damn boring I really don't care lol!


Powdercoating is a big deal, it's a huge universe in itself with many different products and practices to apply to each unique situation. Is it better than liquid? I really don’t believe so, if you take the best of both products for each intended coatings purpose (powder and liquid) sometimes powder wins and sometimes liquid wins. It’s all in the balance of the expectations for the coating.


Powders are all over the map in hardness/flexibility, gloss, texture. Like anything else it can be formulated and dialed in for your specific requirements by selecting and tweaking the right chemistries.

“thermoplastic” powders remain soft and rubbery like you see on some outdoor lawn furniture, this stuff you can actually reheat to the melting (flow) point like candle wax. Thermosetting powders have cross linking particles blended together that can exist together in a dry cool powder form actually touching each other without cross linking, until you heat them so the powder grains melt and flow together. You have to bring them to that melting cure temp and hold that cure temp for the prescribed amount of time (commonly 10-12 minutes these days). But it takes a while to heat the part up to that temp consistently so the powder can begin it’s cure. So you typically see 25 min to a half hour bake time on lighter metal parts, thicker metals take longer to heat up so you have to bake them longer.

Basically you can do all these same things with the wet chemistries and a lot of times it’s easier in a wet chemistry to target a specific set of properties for the end product (the cured film). Be it gloss level, a specific pencil hardness or durometer, flexibility for impact conformance or bend resistance, marring and abrasion resistance, chemical and UV resistance etc.

And it’s like everything else in the world, you can design a paint to be super awesome at one thing, pretty damn good at 2 things, good at 3 things, fair at 4 things, ok at 5 things etc. Like with vehicles or motorcycles… crossovers and enduro bikes are ok at a few things but suck when put up against a purpose built machine (a chevy avalanche vs a ford raptor in the raptor’s playground…. Bad for avalanche. A kawi KLR 650 vs a full moto x bike in supercross… bad for KLR) lol!

I’m trying to say that there are always tradeoffs in paint chemistries be it powder or liquid. So goes the way of the paint world, prescribe the right paint for the right part and you are golden.





I wasn't gonna jump into this conversation, but I had to compliment the work in the photos posted above.

Very nice stuff.


Ok, I’m gonna shut up now and go back to work.

:grin:
 
northerndave, I have to thank you not only for the compliments but for one of the finest down-to-earth, easily understood explanations of powder technology I've ever seen on the internet outside of powder chemistry discussions. I've been doing this as a hobby since 1999 and hung my shingle in 2007 ... and have to admit I'm not easy to impress. :D Nicely done sir!
 
I know I was the one who said powder coating was easy. I was going by what I've seen and experienced. Which isn't even comparable to "cudachick1968 or northerdave" knowledge and achievements. Great work on those parts. And I humbly retract my statement's on the subject.
 
The fact that you use your super powder coating powers for good and not for evil/boring manufacturing purposes... is wonderful. Lol!

I'm looking to get out of my field of work because I'm bored with it, you've figured out how to make powder coating cool. :grin:

Awesome for you. I sure hope your business continues to grow, certainly looks to be top quality work.
 
well, maybe a little tease...

View attachment 111837

That is some beautiful work. CudaChick, the extent of my work is what you see, one color, parts that are small and I would rather have coated than painted. Your work is top quality and if I wanted anything more then what I am comfortable with, I would contact you about your service. PS, I wasn't impling that anyone can do what you do, rather what I do!
 
well, maybe a little tease...


Damn Leanna, those look INCREDIBLY AWESOME. :headbang:I thought my home painted vc's looked pretty good but I'm having second thoughts now. Well now that I'm going back to work maybe I'll be able to get some parts done :)
 
I know I was the one who said powder coating was easy. I was going by what I've seen and experienced. Which isn't even comparable to "cudachick1968 or northerdave" knowledge and achievements. Great work on those parts. And I humbly retract my statement's on the subject.

Oh nooooo fate and sporty, please don't EVER diminish or underrate your own work or fail to share what you know -- this is a DIY forum after all, and there's no such thing as too much information on any subject. The only disservice happens when it's the wrong information. Besides, we all have to start somewhere, and in my view no day is a success unless you learn at least one new thing.

Please understand I wasn't picking on you guys at all, just a bit of a teasing with the poker call, and wanted to show you and the others what could be possible with some imagination, patience and techniques. I'm sure northerndave and the others with lots of time in the industry will agree that we could all do nothing day in and day out except track down and try to correct all the misinformation and false rumors on the 'net about powder coating and never, ever ever be able to. Sometimes while reading forums I just cringe and have to pass it by just because there's 30 guys all tossing out "information" about things they know nothing about ... and sadly, there just isn't enough time in the day to set them all straight and help them with their projects. Like you, I enjoy sharing [some of hehh hehhhh] what I know too but I'll never consider myself an expert -- because there's always something else to try that ya didn't think of before.

Just ask MarPar about my initial evaluation of his truly wild 6-color valve cover idea -- it wasn't pretty at all. But after staring at them awhile and rethinking a few things, I figured out a plan to cut my masking time more than in half ... and even as my own worst critic I can't complain too much about the results on his big block MPs up there.

I really do appreciate your comments and want to extend a hand if there's ever anything I can help you guys out with as you continue to progress. Billy's on the phone almost constantly and my equipment's loud but I've got voice mail and can call ya back.

* * *

northerndave, I get a kick out of your posts -- not just because you know about powder, but because you've got a great sense of humor and appear to be a very honest person. I spent 20 years working for lawyers with their own evil and boring ways so I know exactly what you mean about the daily grind. You've got terrific advice from what I've seen ... but all I have is You Don't Work a Day in Your Life If You Love What You Do. Except for a boatload of Commando valve covers over the years LOL, it's rare that any two jobs are alike so it always stays fresh and interesting. The customers and comments like yours are what keep me inspired!!

Thanks a lot guys. I know I haven't been able to devote a lot of time the last few years to FBBO like I do FABO, but you've all made my little transition to the B Body board fun and truly entertaining. In the words of big ol' Arnold, I'll Be Back. :icon_cheers:
 
Those valve covers look absolutely fabulous. I have some M/T valve covers that need that kind of work done to them.
 
Leanna, thanks for comin by and clearin it all up. I wasn't aware powder coating was more more flexible. I guess that tells you all I've seen is crappy jobs. lol
 
Those valve covers look absolutely fabulous. I have some M/T valve covers that need that kind of work done to them.

Thank you! I've done a bunch of Mickeys over the years but most have been black and/or polished.

Leanna, thanks for comin by and clearin it all up. I wasn't aware powder coating was more more flexible. I guess that tells you all I've seen is crappy jobs. lol

It's my pleasure Rob! :toothy5:
 
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