Home -> RV-7 and RV-7A topic: etch procedure for AFS primer/sealer

Author: "bezakb" <bezakb@...> Time: Mon Feb 23, 2004 9:57 pm PST Link

I want to use AFS primer/sealer. How do I use the etch solution ? Can
I dip the parts into etch? Do I need to scrub the parts? Do I spray
the etch? Do I need mask for etch or primer? How much etch do I need
for tail ? Thanks.

Branislav


Author: "Jim Smith" <jsmith@...> Time: Tue Feb 24, 2004 4:11 am PST Link

You may want to check out Dan Checkoway's site on priming:

http://www.rvproject.com/primer.html

Jim
www.whiskeybravo.com
www.fun-places-to-fly.com

----- Original Message -----
From: bezakb
To: RV7and7A@yahoogroups.com
Sent: Monday, February 23, 2004 7:56 PM
Subject: [RV7Yahoo] etch procedure for AFS primer/sealer

I want to use AFS primer/sealer. How do I use the etch solution ? Can
I dip the parts into etch? Do I need to scrub the parts? Do I spray
the etch? Do I need mask for etch or primer? How much etch do I need
for tail ? Thanks.

Branislav

Van's Air Force - World Wide Wing
www.vansaircraft.net

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Author: "dualrudder" <rvy@...> Time: Tue Feb 24, 2004 2:24 pm PST Link

When I talked to AFS, they recommending using a spray bottle for the
etch, diluting as directed on the etch bottle. Spray the stuff on,
let it sit for a minute, scrub with Scotch-brite, rinse thoroughly.
And yes, you'll want a mask or good ventilation. And eye protection
is also a good idea. You could probably dip in the etch as well.

I used almost one quart of the undiluted etch on the tail.

Also, check out Andy Karmy's site. He has specific info on the AFS
primer:
http://www.karmy.com/rv9a/pictures/rv9priming.htm

Dave
RV-7A wings
www.dualrudder.com/rv7

--- In RV7and7A@yahoogroups.com, "bezakb" <bezakb@y...> wrote:
> I want to use AFS primer/sealer. How do I use the etch solution ?
Can
> I dip the parts into etch? Do I need to scrub the parts? Do I
spray
> the etch? Do I need mask for etch or primer? How much etch do I
need
> for tail ? Thanks.
>
> Branislav


Author: "jmjula" <jmjula@...> Time: Tue Feb 24, 2004 2:25 pm PST Link

The AFS etch is pretty much a high concentration detergent, typically
diluted with 1 part distilled water. I cover the parts to be etched
using a brush, let it sit for a minute or so, and then scrub lightly
with a synthetic 'scotch brite' pad. Make sure it is synthetic,
otherwise you have metal to metal corrosion possibilities. Once
scrubbed, simply rinse with water until all etch is removed. I use
rubber gloves for etching, and I do wear a respirator and safety
glasses to be safe.

It seems that one bottle of etch is good for about a gal of paint. I
would suspect that one would use a whole gal on the entire structure
of the plane, based on my use.

James

--- In RV7and7A@yahoogroups.com, "bezakb" <bezakb@y...> wrote:
> I want to use AFS primer/sealer. How do I use the etch solution ?
Can
> I dip the parts into etch? Do I need to scrub the parts? Do I spray
> the etch? Do I need mask for etch or primer? How much etch do I
need
> for tail ? Thanks.
>
> Branislav



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