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Peter.James(at)sprint.com
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 Posted: Tue Aug 12, 2008 12:46 pm Post subject: WARNING: Epoxy filler |
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Hey kids,
I was just catching up on old DIGEST messages…and thought I needed to post in regard to the message below.
I am using the West Systems Epoxy like most…but be warned about the 410 filler. It doesn’t say it on the Aircraft Spruce site, nor in their catalog, but you can’t use this filler under dark colored paint. Apparently it’s not good to let the stuff heat up and expand. I don’t know the exact details of what the 410 filler is comprised of..but on the WESTMARINE.COM site, it warns against it.
The ideal low-density filler for creating a light, easily-worked fairing compound especially suited for fairing large areas. Microlight™ mixes with greater ease than #407 Low-Density filler or microballoons and is approximately 30% easier to sand.
<![if !supportLists]>· <![endif]>Feathers to a fine edge and is also more economical for large fairing jobs.
<![if !supportLists]>· <![endif]>Not recommended under dark paint.
<![if !supportLists]>· <![endif]>Not recommended on surfaces subjected to high temperatures.
<![if !supportLists]>· <![endif]>Cures to a tan color.
I am concerned that it will expand and ‘POP’, thus, I am not using 410 filler on anything. I spoke with another builder at Osh that thought it had “plastic” content. Again, I have not verified this. Do some homework before you put this out in the sun on the tarmac. Especially if under dark paint or stripes.
I am using the high density filler for its adhesive and structural qualities, and just ordered the 406 filler last night to try out. I have micro-balloons, Chopped Glass, cotton flox in my shop. I agree that the West fillers are the best and easiest to work with and so I will stick with them.
Pete #40100
Time: 05:27:58 PM PST US
From: Tim Olson <Tim(at)MyRV10.com>
Subject: Re: toner in windshield fairing
They have a variety:
http://www.myrv10.com/tips/options.html
http://www.westsystem.com/
Go to the product guide
410 Microlight is just one of the things you'll use tons of.
Great stuff, sands well. The guy who helped paint was impressed as heck with it.
406 Colloidal silica is another one you'll use, along with one other that I can't remember right now.
You'll go through cans and cans of 410 by the time you're done with the project, and gallons of epoxy. People have no idea how much you can spend on epoxy supplies to finish the kit...it's hundreds of dollars.
Tim Olson - RV-10 N104CD - Flying
do not archive
[quote][b]
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Tim Olson
Joined: 25 Jan 2007
Posts: 2879
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| Posted: Wed Aug 13, 2008 5:51 am Post subject: WARNING: Epoxy filler |
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Definitely good advice not to use it under dark paint. I only have
white paint, with no bad effects at all. I would extend the
advice a bit further even though and recommend that if someone
is going to go with dark paint, avoid the dark paint on the
cabin top and any of the glass areas that get that direct sun.
And, probably best to avoid it on the fuel tanks as well, just
to keep that fuel from getting as hot. Those that have been
on the list for years may remember some testing that was done
that showed the temperatures achieved with various colors of
paint, and darker paints got significantly warmer...and heat
doesn't go well with anything that expands a terrible amount.
That's part of why you see so many white or white on top/color
on bottom type paint schemes.
I've got the 410 all over the place on elevator tip fairings,
rudder tip fairings, the seam below the cabin top, and places
like that. But, I have white paint in those places.
Tim Olson - RV-10 N104CD - Flying
do not archive
James, Peter [SD] wrote:
| Quote: | Hey kids,
I was just catching up on old DIGEST messages…and thought I needed to
post in regard to the message below.
I am using the West Systems Epoxy like most…but be warned about the 410
filler. It doesn’t say it on the Aircraft Spruce site, nor in their
catalog, but you can’t use this filler under dark colored paint.
Apparently it’s not good to let the stuff heat up and expand. I don’t
know the exact details of what the 410 filler is comprised of..but on
the WESTMARINE.COM site, it warns against it.
The ideal low-density filler for creating a light, easily-worked fairing
compound especially suited for fairing large areas. Microlight™ mixes
with greater ease than #407 Low-Density filler or microballoons and is
approximately 30% easier to sand.
· Feathers to a fine edge and is also more economical for large
fairing jobs.
· *Not recommended under dark paint. *
· *Not recommended on surfaces subjected to high temperatures. *
· Cures to a tan color.
I am concerned that it will expand and ‘POP’, thus, I am not using 410
filler on anything. I spoke with another builder at Osh that thought it
had “plastic” content. Again, I have not verified this. Do some
homework before you put this out in the sun on the tarmac. Especially
if under dark paint or stripes.
I am using the high density filler for its adhesive and structural
qualities, and just ordered the 406 filler last night to try out. I
have micro-balloons, Chopped Glass, cotton flox in my shop. I agree
that the West fillers are the best and easiest to work with and so I
will stick with them.
Pete #40100
Time: 05:27:58 PM PST US
From: Tim Olson <Tim(at)MyRV10.com>
Subject: Re: toner in windshield fairing
They have a variety:
http://www.myrv10.com/tips/options.html
http://www.westsystem.com/
Go to the product guide
410 Microlight is just one of the things you'll use tons of.
Great stuff, sands well. The guy who helped paint was impressed as heck
with it.
406 Colloidal silica is another one you'll use, along with one other
that I can't remember right now.
You'll go through cans and cans of 410 by the time you're done with the
project, and gallons of epoxy. People have no idea how much you can
spend on epoxy supplies to finish the kit...it's hundreds of dollars.
Tim Olson - RV-10 N104CD - Flying
do not archive
*
*
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| | - The Matronics RV10-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?RV10-List |
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