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John Bolding
Joined: 23 May 2006
Posts: 281
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 Posted: Mon Mar 03, 2008 5:24 pm Post subject: Powder requirements |
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Spent a career selling powder equipment and blast equipment so I'll throw my
.02 in here.
Unlike a solvent born liquid paint, powder is VERY unforgiving of a
contaminated substrate, it MUST be clean, no oils, ect. Wiping it down
with solvent just spreads the oils around in lower concentrations. Rust HAS
to be removed down to the white metal. (If you're serious about a quality
job) A solvent born paint uses the solvents to "blend into" a contaminated
surface much better than a water born paint and infinitely better than
powder. A blasted surface with a little "tooth" is the preferred surface
for powder.
look for an electric oven instead of the gas fired one, much safer.
John Bolding
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| Quote: | I'm going to try something I've never done before and that is powder
coating. I bought a powder coating gun and powder paint at Harbor
Freight. It was a fraction of the cost there, compared to Sears. I'm
looking for a used gas stove to bake the parts in. I was looking for a
primer to apply to the parts prior to powder coating. My brother in law
told me he didn't think I needed a primer, just only an acid etch to lock
up the rust. I have that already, just not sure if I should or shouldn't
use some type of primer first. Any ideas on that one?
I'll be the first to admit here, I am a newbie. I have a lot to learn and
hopefully, I can get some really good information just from asking the
right questions.
Any and all help is of course, GREATLY appreciated!
Best Regards
Larry Hursh
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Larry Hursh
Joined: 16 Feb 2008
Posts: 125
Location: Edwardsburg, MI (near Elkhart, IN)
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| Posted: Mon Mar 03, 2008 7:45 pm Post subject: Powder requirements |
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Thanks for the info John. I did realize that I need an electric oven instead of a gas one. Makes sense because I never thought of "fumes" being so explosive. Glad I asked about it.
I'm slowly learning about the powder coating too. I was told I need to use a "pre-primer" (acid type solution) and another person suggested an "etching primer" as a base coat. Everything I've been reading says I need only bare metal for the best adhesion, but it MUST be clean as you said. I'm planning on powder coating the push rod tubes, cylinder heads, and the rear cover. I still haven't decided if I want to buy the "Corvair 100 HP valve covers from WW or coat these too, along with the oil pan. Decisions, decisions! I think once I learn all the in's and out's of powder coating, I'll want to paint anything and everything I can get into the oven!
I read too that there is such a thing as a "low temp" powder but as of yet, I haven't run across it for sale. Is there such a thing and if there is, where could it be purchased at?
Like I said before, I'm such a newbie at this but I DO have the perfectionism in me to do something extremely well if I do it at all. For me, there is no such thing as "good enough". It HAS TO BE RIGHT or I will NOT do it. (I guess this is why I'm going through the learning curve, asking as many questions as I can to learn.
Thanks to all that are helping me to understand this process of powder coating. I think it is going to be something that is going to be well worth the efforts!
Regards,
Larry Hursh
John Bolding <jnbolding1(at)teleshare.net> wrote:
[quote]--> Zenith-List message posted by: "John Bolding"
Spent a career selling powder equipment and blast equipment so I'll throw my
.02 in here.
Unlike a solvent born liquid paint, powder is VERY unforgiving of a
contaminated substrate, it MUST be clean, no oils, ect. Wiping it down
with solvent just spreads the oils around in lower concentrations. Rust HAS
to be removed down to the white metal. (If you're serious about a quality
job) A solvent born paint uses the solvents to "blend into" a contaminated
surface much better than a water born paint and infinitely better than
powder. A blasted surface with a little "tooth" is the preferred surface
for powder.
look for an electric oven instead of the gas fired one, much safer.
John Bolding
-----
[quote] I'm going to try something I've never done before and that is powder
coating. I [quote][b]
| | - The Matronics Zenith-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith-List |
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_________________
Larry Hursh (N650LM Reserved)
"One rivet at a time......one day at a time.."
CH650 (Converted from CH601XL)
1/2 done with fuselage
will be Corvair Powered |
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