Primer prep

[Wes & Bobbi Jo Erb]

Hello all---
Many thanks for all the primer suggestions last week... lots of helpful
tips. Since I'm on a roll, I've got another question about it. I'm getting
ready to assemble ribs and skins in the elevator and want to brush interior
and mating surfaces with EP-420 since it might see salt water one day. The
MAM book just suggests Metl-Sol cleaning with Scotchbrite pads, but is this
sufficient to give the primer something to grip to, or is it necessary to
etch and alodine these parts too? And could you use acetone instead of the
Metl-Sol to clean? ($11 vs $43 a gallon) Thanks for your thoughts!

Wes Erb
FB Moose#208
Chugiak, AK




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[klehman]

Hi Wes

I use acetone after scotchbriting which I think is what most guys do.
Some guys use citrus cleaner apparently and some use the more toxic MEK.
There is no way that I will touch alodine chemicals (quite toxic) and I
think epoxy primer on 6061 will outlast my children anyway. I thin the
epoxy primer so that I get a thin see through coat for interior
protection. Heavy coats don't seem to be any better from what I
understand. My wing interiors are bare but I'll shoot in some
corrosion-X after everything is painted.

On the exterior only I did an alumniprep etch. That is the next step to
consider before thinking about alodine in my opinion.

Ken


Wes & Bobbi Jo Erb wrote:

Hello all---
Many thanks for all the primer suggestions last week... lots of helpful
tips. Since I'm on a roll, I've got another question about it. I'm getting
ready to assemble ribs and skins in the elevator and want to brush interior
and mating surfaces with EP-420 since it might see salt water one day. The
MAM book just suggests Metl-Sol cleaning with Scotchbrite pads, but is this
sufficient to give the primer something to grip to, or is it necessary to
etch and alodine these parts too? And could you use acetone instead of the
Metl-Sol to clean? ($11 vs $43 a gallon) Thanks for your thoughts!

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[Bob Patterson]

Hi Wes !

Think Ken has covered it well - by all means, go with
acetone. For the large flat interior surfaces, you should
really thin the epoxy <a lot> with reducer, if you're brushing -
if it's too thick, it'll crack, defeating the purpose. Of course,
you'll use it full strength for the joins...

It might be easier to thin it and spray with a small gun,
like an artists air brush, for just the interior of the tail feathers.
The coat should be thin enough that you can still read the lettering
on the aluminum sheet ! Remember to use a pressure air hood for
clean fresh air when spraying, though - epoxy spray is NASTY stuff
for the lungs !!

For the inside of the wings, you can blow in Northern Shield
or similar, later, after closing. And don't forget the drain
holes ... ;-)

.....bobp

--------------------------------orig.-------------------------------
At 06:15 AM 10/4/03 -0800, you wrote:

Hello all---
Many thanks for all the primer suggestions last week... lots of helpful
tips. Since I'm on a roll, I've got another question about it. I'm getting
ready to assemble ribs and skins in the elevator and want to brush interior
and mating surfaces with EP-420 since it might see salt water one day. The
MAM book just suggests Metl-Sol cleaning with Scotchbrite pads, but is this
sufficient to give the primer something to grip to, or is it necessary to
etch and alodine these parts too? And could you use acetone instead of the
Metl-Sol to clean? ($11 vs $43 a gallon) Thanks for your thoughts!

Wes Erb
FB Moose#208
Chugiak, AK




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[Jones, Michael]

hwy wes

if you want a really quick and easy solution to protection for inside
surfaces try everbrite clear coat, i have used it on all enclosed surfaces
and its great, web site is http://www.everbrite.net/

mike#007

-----Original Message-----
From: Wes & Bobbi Jo Erb [mailto:lv2hike@gci.net]
Sent: Saturday, October 04, 2003 10:16 AM
To: murphy-rebel@dcsol.com
Subject: Primer prep


Hello all---
Many thanks for all the primer suggestions last week... lots of helpful
tips. Since I'm on a roll, I've got another question about it. I'm
getting
ready to assemble ribs and skins in the elevator and want to brush interior
and mating surfaces with EP-420 since it might see salt water one day. The
MAM book just suggests Metl-Sol cleaning with Scotchbrite pads, but is this
sufficient to give the primer something to grip to, or is it necessary to
etch and alodine these parts too? And could you use acetone instead of the
Metl-Sol to clean? ($11 vs $43 a gallon) Thanks for your thoughts!

Wes Erb
FB Moose#208
Chugiak, AK




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