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<p class=MsoNormal><span class=EmailStyle18><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Thank you
for the very informative information. I have never used epoxy for fuel proofing.
I've used Polyester finishing resin and K&B epoxy paint until I ran out and
recently Formula-U Polyurethane paint. What are your thoughts on these
alternate materials?<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle18><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>I find fuel
proof compromising gouges are more visible using colored paint rather than a
clear coating.<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle18><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Jim Hiller<o:p></o:p></span></font></span></p>
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style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><span
style="mso-spacerun: yes"> </span><o:p></o:p></span></font></span></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:black'>-----Original
Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<b><span style='font-weight:
bold'>On Behalf Of </span></b>Gray E Fowler<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, March 16, 2009 6:24
AM<br>
<b><span style='font-weight:bold'>To:</span></b> General pattern discussion<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion]
thinning epoxy, how?</span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:.5in'><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'>Fast curing epoxy adhesives such as
the 30 minute are a bad initial choice. I realize that thousands have used it
in these applications, but that still does not make it a good choice. The non
reactive components in the fast epoxy plasticize with age and methanol and
nitro will seriously degrade the stuff. Using one of the thinner slower curing
laminating resins will require less solvent, if any and provide a much longer
lasting barrier. Any solvent added to an epoxy needs to evaporate completely or
you will created a problem. Denatured alcohol (ethanol) evaporates very slowly.
Cutting a fast cure epoxy with a slow evaporating solvent is a recipe for
trapping alot of solvent, making the chemical resistant even worse. Methanol
evaporates much faster and epoxy is much more soluable in methanol. Be very
careful using ketone solvents (acetone, MEK) or aromatics (Toluene, Xylene)
because many kit manufacturers use styrofoam as a core material that will be
destroyed in seconds with all solvents except the alcohols.</span></font><font
color=black><span style='color:black'> <br>
<br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'>SO!</span></font><font color=black><span
style='color:black'> <br>
<br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'>1. Use a thin slower cure laminating
resin</span></font><font color=black><span style='color:black'> <br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'>2. Use Acetone, MEK or Laquer
thinner</span></font><font color=black><span style='color:black'> <br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'>3. NO puddles, super thin coat</span></font><font
color=black><span style='color:black'> <br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'>4. Alcohols if you have a styrofoam
core</span></font><font color=black><span style='color:black'> <br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'>5. rule #3 again</span></font><font
color=black><span style='color:black'> <br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'><br>
6. If you only need the plane to last 1 year, then use 15 minute epoxy and do
not worry..it will last 1 year or so.</span></font><font color=black><span
style='color:black'> <br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'><br>
Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radomes and Specialty Apertures<br>
Technical Staff Composites Engineering<br>
Raytheon</span></font><font color=black><span style='color:black'> <br
style='mso-special-character:line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]></span></font><font color=black><span style='color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=1 color=black face=sans-serif><span
style='font-size:7.5pt;font-family:sans-serif;color:black;font-weight:bold'>"J
Shu" <jshulman@cfl.rr.com></span></font></b><font size=1
color=black face=sans-serif><span style='font-size:7.5pt;font-family:sans-serif;
color:black'> </span></font><font color=black><span style='color:black'><br>
</span></font><font size=1 color=black face=sans-serif><span
style='font-size:7.5pt;font-family:sans-serif;color:black'>Sent by:
nsrca-discussion-bounces@lists.nsrca.org</span></font><font color=black><span
style='color:black'> </span></font><font color=black><span style='color:black;
mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p><font size=1 color=black face=sans-serif><span style='font-size:7.5pt;
font-family:sans-serif;color:black'>03/15/2009 02:15 AM</span></font><font
color=black><span style='color:black'> </span></font><font color=black><span
style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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<p class=MsoNormal align=center style='text-align:center'><font size=1
color=black face=sans-serif><span style='font-size:7.5pt;font-family:sans-serif;
color:black'>Please respond to<br>
General pattern discussion <nsrca-discussion@lists.nsrca.org></span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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<p class=MsoNormal align=right style='text-align:right'><font size=1
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color:black'>To</span></font><font color=black><span style='color:black;
mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=1 color=black face=sans-serif><span
style='font-size:7.5pt;font-family:sans-serif;color:black'>"NSRCA"
<nsrca-discussion@lists.nsrca.org></span></font><font color=black><span
style='color:black'> </span></font><font color=black><span
style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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color:black'>cc</span></font><font color=black><span style='color:black;
mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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<p class=MsoNormal align=right style='text-align:right'><font size=1
color=black face=sans-serif><span style='font-size:7.5pt;font-family:sans-serif;
color:black'>Subject</span></font><font color=black><span style='color:
black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
</td>
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<p class=MsoNormal><font size=1 color=black face=sans-serif><span
style='font-size:7.5pt;font-family:sans-serif;color:black'>[NSRCA-discussion]
thinning epoxy, how?</span></font><font color=black><span style='color:
black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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<br>
<br>
</span></font><tt><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>I want to add
another layer of sealer to the firewall and tunnel on my plane... what's the
best way to do it with epoxy? I've got 30 </span></font></tt><font size=2
color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-fareast-font-family:"Courier New";color:black'><br>
<tt>minute but not sure how to thin it to seal it.</tt><br>
<br>
<tt>Regards,</tt><br>
<tt>Jason</tt><br>
<tt>www.shulmanaviation.com</tt><br>
<tt>www.composite-arf.com</tt><br>
<tt>[attachment "IMG_4498 (500 x 299).jpg" deleted by Gray E
Fowler/US/Raytheon] _______________________________________________</tt><br>
<tt>NSRCA-discussion mailing list</tt><br>
<tt>NSRCA-discussion@lists.nsrca.org</tt><br>
<tt>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</tt></span></font><font
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