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naumuk(at)alltel.net
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 Posted: Mon Sep 04, 2006 5:35 am Post subject: White corrosion |
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All-
Finally found the answer in the archives. You do use lacquer thinner, among other things. I was fixated on "Removing corrosion" (Which turned up no hits) and found the post in "Paint preparation". Suppose I'll have to look harder next time.
do not archive
Bill Naumuk
HDS Fuselage
Townville, Pa
[quote][b]
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Kevin Bonds
Joined: 09 Jan 2006
Posts: 171
Location: Nashville, Tn
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| Posted: Mon Sep 04, 2006 6:35 am Post subject: White corrosion |
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Use Alumiprep 33 to remove corrosion. It’s great stuff. Lacquer thinner has not worked for me. It will only remove the oils, dirt, and ink.
Kevin Bonds
Nashville TN
601XL Corvair powered; Plans building.
Empennage done; working on wings and engine.
http://home.comcast.net/~kevinbonds
do not archive DO NOT ARCHIVE
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Bill Naumuk
Sent: Monday, September 04, 2006 8:35 AM
To: zenith list
Subject: White corrosion
All-
Finally found the answer in the archives. You do use lacquer thinner, among other things. I was fixated on "Removing corrosion" (Which turned up no hits) and found the post in "Paint preparation". Suppose I'll have to look harder next time.
do not archive
Bill Naumuk
HDS Fuselage
Townville, Pa
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[quote][b]
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KevinBonds
Nashville, TN
Plans-building Zenith CH601XL w/Corvair Power
http://home.comcast.net/~kevinbonds |
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RWILBERS(at)tampabay.rr.c
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| Posted: Mon Sep 04, 2006 11:46 am Post subject: White corrosion |
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Kevin: Where did you buy Alumiprep 33?
Regards.............................................................Dick 601 HDS in Florida
Do not archive
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of kevinbonds
Sent: Monday, September 04, 2006 10:33 AM
To: zenith-list(at)matronics.com
Subject: RE: White corrosion
Use Alumiprep 33 to remove corrosion. It’s great stuff. Lacquer thinner has not worked for me. It will only remove the oils, dirt, and ink.
Kevin Bonds
Nashville TN
601XL Corvair powered; Plans building.
Empennage done; working on wings and engine.
http://home.comcast.net/~kevinbonds
do not archive DO NOT ARCHIVE
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Bill Naumuk
Sent: Monday, September 04, 2006 8:35 AM
To: zenith list
Subject: White corrosion
All-
Finally found the answer in the archives. You do use lacquer thinner, among other things. I was fixated on "Removing corrosion" (Which turned up no hits) and found the post in "Paint preparation". Suppose I'll have to look harder next time.
do not archive
Bill Naumuk
HDS Fuselage
Townville, Pa
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01234567890123
4 [quote][b]
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Kevin Bonds
Joined: 09 Jan 2006
Posts: 171
Location: Nashville, Tn
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| Posted: Mon Sep 04, 2006 1:36 pm Post subject: White corrosion |
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Aircraft Spruce and Specialty. But have found that auto paint supply houses carry similar stuff.
Kevin Bonds
Nashville TN
601XL Corvair powered; Plans building.
Empennage done; working on wings and engine.
http://home.comcast.net/~kevinbonds
do not archive DO NOT ARCHIVE
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of DICK WILBERS
Sent: Monday, September 04, 2006 2:45 PM
To: zenith-list(at)matronics.com
Subject: RE: White corrosion
Kevin: Where did you buy Alumiprep 33?
Regards.............................................................Dick 601 HDS in Florida
Do not archive
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of kevinbonds
Sent: Monday, September 04, 2006 10:33 AM
To: zenith-list(at)matronics.com
Subject: RE: White corrosion
Use Alumiprep 33 to remove corrosion. It’s great stuff. Lacquer thinner has not worked for me. It will only remove the oils, dirt, and ink.
Kevin Bonds
Nashville TN
601XL Corvair powered; Plans building.
Empennage done; working on wings and engine.
http://home.comcast.net/~kevinbonds
do not archive DO NOT ARCHIVE
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Bill Naumuk
Sent: Monday, September 04, 2006 8:35 AM
To: zenith list
Subject: White corrosion
All-
Finally found the answer in the archives. You do use lacquer thinner, among other things. I was fixated on "Removing corrosion" (Which turned up no hits) and found the post in "Paint preparation". Suppose I'll have to look harder next time.
do not archive
Bill Naumuk
HDS Fuselage
Townville, Pa
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[quote][b]
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KevinBonds
Nashville, TN
Plans-building Zenith CH601XL w/Corvair Power
http://home.comcast.net/~kevinbonds |
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Kevin Bonds
Joined: 09 Jan 2006
Posts: 171
Location: Nashville, Tn
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| Posted: Mon Sep 04, 2006 7:22 pm Post subject: White corrosion |
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I want to expound a bit on my comment about finding “Metal conditioners” at auto paint supply houses. Alumiprep 33 is a phosphoric acid based chemical cleaner. Other companies make this same sort of thing (PPG and others). You are likely to find these locally as long as you live near a city. They may call them aluminum “conditioners” or “brighteners”. I happen to live in a fairly industrial area just around the corner from a whole slew of these auto paint shops. So I’ll buy my next batch from them.
Kevin Bonds
Nashville TN
601XL Corvair powered; Plans building.
Empennage done; working on wings and engine.
http://home.comcast.net/~kevinbonds
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of kevinbonds
Sent: Monday, September 04, 2006 4:35 PM
To: zenith-list(at)matronics.com
Subject: RE: White corrosion
Aircraft Spruce and Specialty. But have found that auto paint supply houses carry similar stuff.
Kevin Bonds
Nashville TN
601XL Corvair powered; Plans building.
Empennage done; working on wings and engine.
http://home.comcast.net/~kevinbonds
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of DICK WILBERS
Sent: Monday, September 04, 2006 2:45 PM
To: zenith-list(at)matronics.com
Subject: RE: White corrosion
Kevin: Where did you buy Alumiprep 33?
Regards.............................................................Dick 601 HDS in Florida
[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:
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_________________
KevinBonds
Nashville, TN
Plans-building Zenith CH601XL w/Corvair Power
http://home.comcast.net/~kevinbonds |
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Trainnut01(at)aol.com
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| Posted: Mon Sep 04, 2006 9:47 pm Post subject: White corrosion |
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Kevin
NAPA carries a Martin-Senour product called "Twin Etch". Van's recommends it on their RVs. I used it on my RV and am now using it on my XL.
Carroll Jernigan
Lenoir City, TN
do not archive
[quote][b]
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naumuk(at)alltel.net
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| Posted: Tue Sep 05, 2006 3:14 pm Post subject: White corrosion |
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Kevin-
That's what I wanted to hear. Don't care where you live- there's a NAPA within spitting distance. Of course, if it's not in stock........
Here's my big question. It means a lot to me because depending on the answer, I have to shift from "Build" to "Scrub down" mode before going any farther.
Once you get some corrosion, do you have to strip interior surfaces clean like you would for a painted surface BEFORE applying your Zinc Chromate or other protectant, or can you just apply the protectant? I don't know- maybe skins stop corroding when you separate so moisture doesn't collect between them and you don't have to do anything. I don't think you have a choice but to thoroughly clean the painted surfaces.
All input, especially from builders who found themselves in the same situation, is appreciated.
do not archive
Bill Naumuk
HDS Fuselage
Townville, Pa
[quote] ---
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Kevin Bonds
Joined: 09 Jan 2006
Posts: 171
Location: Nashville, Tn
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| Posted: Tue Sep 05, 2006 4:07 pm Post subject: White corrosion |
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This is a good question. I am no expert so I can give you no expert opinion. But my thinking is that, while I plan to clean everything as well as zinc oxide, I think self-etching Zinc oxide would offer good control because of its galvanic properties. I would not prefer a wash primer like Cortec for a surface that was showing some signs of oxidation. I copied the following from Wikipedia:
“Zinc coatings prevent oxidation of the protected metal by forming a barrier, and by acting as a sacrificial anode if this barrier is damaged. Zinc oxide is a fine white dust that (in contrast to iron oxide) does not cause a breakdown of the substrate's surface integrity as it is formed. Indeed the zinc oxide, if undisturbed, can act as a barrier to further oxidation, in a way similar to the protection afforded to aluminium and stainless steels by their oxide layers.”
Also it is my understanding that this galvanic protection can extend beyond the treatment area by 1/8 inch (?) or so.
Kevin Bonds
Nashville TN
601XL Plans building.
http://home.comcast.net/~kevinbonds
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Bill Naumuk
Sent: Tuesday, September 05, 2006 6:13 PM
To: zenith-list(at)matronics.com
Subject: Re: White corrosion
Kevin-
That's what I wanted to hear. Don't care where you live- there's a NAPA within spitting distance. Of course, if it's not in stock........
Here's my big question. It means a lot to me because depending on the answer, I have to shift from "Build" to "Scrub down" mode before going any farther.
Once you get some corrosion, do you have to strip interior surfaces clean like you would for a painted surface BEFORE applying your Zinc Chromate or other protectant, or can you just apply the protectant? I don't know- maybe skins stop corroding when you separate so moisture doesn't collect between them and you don't have to do anything. I don't think you have a choice but to thoroughly clean the painted surfaces.
All input, especially from builders who found themselves in the same situation, is appreciated.
do not archive
Bill Naumuk
HDS Fuselage
Townville, Pa
[quote]
---
| | - 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 |
|
_________________
KevinBonds
Nashville, TN
Plans-building Zenith CH601XL w/Corvair Power
http://home.comcast.net/~kevinbonds |
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Wed Sep 06, 2006 3:22 am Post subject: White corrosion |
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When you do the Alumiprep make sure you do a water break test. Just pour fresh water across the part and it should sheet evenly... If not scrub again in places where the water didn't sheet.
Noel
[quote]
--
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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larry(at)macsmachine.com
Guest
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| Posted: Wed Sep 06, 2006 10:11 am Post subject: White corrosion |
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Bill,
In the process of preparing for paint, especially my water-thinned
primer, you have to scrub the plane clean, etch and rinse it. The
problem I find is
that to be able to prime, you must do it within 12 hours of rinse so
that the oxides don't re-establish before primer. Hard to do because
the interior of
wings and things get damp during the rinse and are somewhat resistant to
the air gun blow dry process. Do check that the primer you're going to use
is compatible with the zinc chromate you put inside your plane. I've
been doing a work-around for an external primer that isn't compatible by
extensively
drying the seams and rivets.
Larry McFarland - 601HDS at www.macsmachine.com
Bill Naumuk wrote:
| Quote: | Kevin-
That's what I wanted to hear. Don't care where you live- there's a
NAPA within spitting distance. Of course, if it's not in stock........
Here's my big question. It means a lot to me because depending on
the answer, I have to shift from "Build" to "Scrub down" mode before
going any farther.
Once you get some corrosion, do you have to strip interior
surfaces clean like you would for a painted surface BEFORE applying
your Zinc Chromate or other protectant, or can you just apply the
protectant? I don't know- maybe skins stop corroding when you separate
so moisture doesn't collect between them and you don't have to do
anything. I don't think you have a choice but to thoroughly clean the
painted surfaces.
All input, especially from builders who found themselves in the
same situation, is appreciated.
do not
archive
Bill Naumuk
HDS Fuselage
Townville, Pa
|
| | - 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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