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<DIV><FONT face=Arial size=2>That's almost exactly what Gray said. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Essentially they're giving a work around to the
high viscosity of the West Systems epoxy. The heating method would be tough to
use when glassing a wing or fuse though.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>BTW, I use West Systems Epoxy and love it for
general purpose use, it's just not ideal for glassing.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keith Black</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=lightfoot@sc.rr.com href="mailto:lightfoot@sc.rr.com">Jay
Marshall</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">'NSRCA Mailing List'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, November 27, 2007 12:01
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] epoxy
question</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Although they are
self serving, these comments from West are interesting:</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">“There are
epoxy-based products specifically designed to penetrate and reinforce rotted
wood. These products, basically an epoxy thinned with solvents, do a good job
of penetrating wood. But the solvents compromise the strength and moisture
barrier properties of the epoxy. WEST SYSTEM epoxy can be thinned with
solvents for greater penetration, but not without the same compromises in
strength and moisture resistance. Acetone, toluene or MEK have been used to
thin WEST SYSTEM epoxy and duplicate these penetrating epoxies with about the
same effectiveness. If you chose to thin the epoxy, keep in mind that the
strength and moisture protection of the epoxy are lost in proportion to the
amount of solvent added.” </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">“There is a better
solution to get good penetration without losing strength or moisture
resistance. We recommend moderate heating of the repair area and the epoxy
with a heat gun or heat lamp. The epoxy will have a lower viscosity and
penetrate more deeply when it is warmed and contacts the warmed wood cavities
and pores. Although the working life of the epoxy will be considerable
shortened, slower hardeners (206, 207, 209) will have a longer working life
and should penetrate more than 205 Hardener before they begin to gel. When the
epoxy cures it will retain all of its strength and effectiveness as a moisture
barrier, which we feel more than offsets any advantages gained by adding
solvents to the epoxy.”</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<DIV>
<P><B><I><FONT face="Brush Script MT" color=navy size=4><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 13.5pt; COLOR: navy; FONT-STYLE: italic; FONT-FAMILY: 'Brush Script MT'">Jay
</SPAN></FONT></I></B><B><I><FONT face="Brush Script MT" color=navy
size=4><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 13.5pt; COLOR: navy; FONT-STYLE: italic; FONT-FAMILY: 'Brush Script MT'">Marshall</SPAN></FONT></I></B><FONT
color=navy><SPAN style="COLOR: navy"> </SPAN></FONT></P></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original
Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B>
</SPAN></FONT><FONT face=Tahoma size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">nsrca-discussion-bounces@lists.nsrca.org</SPAN></FONT><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
[mailto:</SPAN></FONT><FONT face=Tahoma size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">nsrca-discussion-bounces@lists.nsrca.org</SPAN></FONT><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">]
<B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Koenig,
Tom<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Monday, November
26, 2007 11:44 PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
</SPAN></FONT><FONT face=Tahoma size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">NSRCA Mailing
List</SPAN></FONT><FONT face=Tahoma size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] epoxy
question</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Gents
and Linda</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">For
laying up work, that is fuselages, cowls etc I use LC3600 Resin. I post cure
at 80 Degrees C for 4 hours. I quite like this resin.</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">For
wings I sand like crazy ( both sides) and seal with dope. Honeycombed
cores. Then I use West 105/207 for skins. Never tried to post cure the
wings, I figured this epoxy would not benefit from it ( i.e I had no data for
it..so I didn't!)</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Tom</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">
<HR align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal
style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 0.5in; MARGIN-RIGHT: 0in"><B><FONT
face=Tahoma color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma">
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Lance Van
Nostrand<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Tuesday, 27
November 2007 2:48 PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
NSRCA Mailing List<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B>
Re: [NSRCA-discussion] epoxy question-I am back</SPAN></FONT></P>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">I use
the West system all the time but we use custom blends made up by master Fowler
for AeroSlave parts after all our R&D on the process design. West
205 hardener gives about 925 cps and the 207 gives about 750. The thin
stuff Gray is talking about is half that!</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">--lance</SPAN></FONT></P></DIV>
<BLOCKQUOTE
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0in; MARGIN: 5pt 0in 5pt 3.75pt; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none">
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">-----
Original Message ----- </SPAN></FONT></P></DIV>
<DIV style="font-color: black">
<P class=MsoNormal style="BACKGROUND: #e4e4e4; MARGIN-LEFT: 0.5in"><B><FONT
face=Arial color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">From:</SPAN></FONT></B><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> <A
title=Pattrnflyr@aol.com
href="mailto:Pattrnflyr@aol.com">Pattrnflyr@aol.com</A>
</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT face=Arial
color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">To:</SPAN></FONT></B><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</A>
</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT face=Arial
color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Sent:</SPAN></FONT></B><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> Monday, November
26, 2007 11:20 AM</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT face=Arial
color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Subject:</SPAN></FONT></B><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> Re:
[NSRCA-discussion] epoxy question-I am back</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT id=role_document
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">I have built
several wood racing boats with West System. The 105/205 is for gluing
and the 105/207 is for glassing and is much thinner and easier to work
with. I glue the boat together with 105/205 and then roll on 105/207
for the final finish and you are done.</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2 PTSIZE="10" FAMILY="SANSSERIF"><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Bruce Reins<BR>A
Stock Hydro/Runabout<BR>15-R </SPAN></FONT></P>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"></SPAN></FONT> </P></DIV>
<DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">In a
message dated 11/26/2007 8:46:44 A.M. Mountain Standard Time,
lightfoot@sc.rr.com writes:</SPAN></FONT></P></DIV>
<BLOCKQUOTE
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; MARGIN-TOP: 5pt; PADDING-LEFT: 4pt; MARGIN-BOTTOM: 5pt; PADDING-BOTTOM: 0in; MARGIN-LEFT: 3.75pt; BORDER-LEFT: blue 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none">
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">West’s 105/205
system seems to be a low viscosity epoxy. It is a slow cure (8 hrs) so if
you add solvent it should have plenty of time to evaporate. I have only
used it for sheeting, not glassing – yet.</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"></SPAN></FONT> </P>
<DIV>
<P style="MARGIN-LEFT: 0.5in"><B><I><FONT face="Brush Script MT"
color=navy size=4><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 13.5pt; COLOR: navy; FONT-STYLE: italic; FONT-FAMILY: 'Brush Script MT'">Jay
Marshall</SPAN></FONT></I></B><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
</SPAN></FONT></P></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Tahoma color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma">-----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,
November 26, 2007 10:23 AM<BR><B><SPAN
style="FONT-WEIGHT: bold">To:</SPAN></B> NSRCA Mailing List<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] epoxy
question-I am back</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 1in"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"><BR></SPAN></FONT><FONT face=Arial
color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">1.
"Thinning the epoxy saves no weight by evaporation. There is
virtually no evaporation and no weight loss-a big time erroneous
assumption on my part. So if you mix 2 ounces of epoxy and add 2
ounces of thinner and put it all on the airplane, you have added 4 ounces
to the airplane. "</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR><BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">After seeing the
real question I expected a weight increase of at least 9% (how much water
in the mix). If you put 1oz (by weight) of solvent in 1 oz of epoxy, and
apply it as a coating , thin, you will eventually end up with 1 oz of
epoxy. Mike, your solvent got trapped, and now it will have less adhesion,
less tensile, Compression and flexure strength, and will now shrink slowly
as the alcohol exits the cured epoxy, over a year or so (see Wayne's
answer).</SPAN></FONT><FONT color=black><SPAN style="COLOR: black">
<BR><BR></SPAN></FONT><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">None of the
solvent's listed will react with any epoxy blend. Exotherm is negligible
when applied as a thin coating, but significant in mass. The ability to
have the solvent evaporate out of the epoxy coating is directly related to
the mixed viscosity of the neat epoxy blend and the cure rate of the
epoxy. Those of you who ran experiments with 5 minute epoxy reported bad
results because of high viscosity and fast cure rate.The high viscosity
(even Mike's blend is apparently too high) will cause a skin effect where
the solvent evaporates from the surface first, creating a high viscosity
skin, then the epoxy starts to cure increasing viscosity even more, thus
trapping the solvent. Using fiberglass makes this even worse. MIKE- in one
year from now your wings will weigh less.</SPAN></FONT><FONT
color=black><SPAN style="COLOR: black"> <BR><BR></SPAN></FONT><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">So it sounds
like the the Pattern Dudes of the world need a solution. What
AeroSlave can do is provide a super low viscosity epoxy for sale. This
will be 100% solids (which means NO solvents). Chances are, as a mixed
epoxy, the viscosity will be lower than even blends with some solvent in
them. This can be used to apply fiberglass to wings or as a general
laminating resin.</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR><BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">How
much interest would there be for such a a product? It would probably cost
about $50/ quart, $25/ pint. It would absolutely require an accurate scale
(+/- 1 gram) to WEIGH the epoxy and hardener into the appropriate mix
ratio. AND I offer no warranty, simply because you guys are the biggest
bunch of experimenters in the world, and I cannot control, nor anticipate
how this could get screwed up.</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR><BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">1.
Operator cannot operate a scale.</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">2.
Operator has a crappy scale.</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">3.
Operator added solvent anyway because thats how he has always done
it...since 1976</SPAN></FONT><FONT color=black><SPAN style="COLOR: black">
<BR></SPAN></FONT><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">4. Operators
basement is 100% realative humidity..condensation on the
wing.</SPAN></FONT><FONT color=black><SPAN style="COLOR: black">
<BR></SPAN></FONT><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">5. Operator
added "more" hardener to make it cure faster.</SPAN></FONT><FONT
color=black><SPAN style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial
color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">6.
Operator......(enter F/U here).</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR><BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">As
you can see there is one common theme to all of these possible problems,
Operator, i.e. customer.</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR><BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">So
if you are STILL interested please respond and Lance and I will take it
under advisement.</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR><BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> </SPAN></FONT><FONT
color=black><SPAN style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial
color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"><BR><BR><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"> </SPAN></FONT></P>
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<P class=MsoNormal><B><FONT face=Arial size=1><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 7.5pt; FONT-FAMILY: Arial">"Dr.
Mike Harrison"
<drmikedds@sbcglobal.net></SPAN></FONT></B><FONT face=Arial
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</SPAN></FONT><BR><FONT face=Arial size=1><SPAN
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<P><FONT face=Arial size=1><SPAN
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial">11/23/2007 01:57
PM</SPAN></FONT> </P>
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<P class=MsoNormal><FONT face=Arial size=1><SPAN
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial">[NSRCA-discussion]
epoxy question</SPAN></FONT></P></TD></TR></TBODY></TABLE>
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style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
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style="FONT-SIZE: 12pt"></SPAN></FONT> </P></TD>
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<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"><BR><BR><BR></SPAN></FONT><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">I have read with
interest all the comments and some of you have educated me on this issue.
If I may, I will share what I have learned.</SPAN></FONT><FONT
color=black><SPAN style="COLOR: black"> <BR> <BR></SPAN></FONT><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">1.
Thinning the epoxy saves no weight by evaporation. There is
virtually no evaporation and no weight loss-a big time erroneous
assumption on my part. So if you mix 2 ounces of epoxy and add 2
ounces of thinner and put it all on the airplane, you have added 4 ounces
to the airplane. </SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">2.
The properties of the epoxy are changed-it becomes
rubbery.</SPAN></FONT><FONT color=black><SPAN style="COLOR: black">
<BR></SPAN></FONT><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">3.
Changing the properties is not an issue regarding finishing the
airplane(painting)</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">4.
Using thinned epoxy is fine for applying glass
cloth.</SPAN></FONT><FONT color=black><SPAN style="COLOR: black">
<BR></SPAN></FONT><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">5. I have
tried MEK(epoxy thinner), denatured alcohol, 91%alcohol, acetone. My
preference is denatured alcohol because it is the safest and most
economical, I think. I thought MEK would be the answer. It is
the worst of the bunch. </SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">6.
The best way to glass surfaces is to thin the epoxy and apply as
sparingly as possible. A way to do that is to apply and wipe off
excess with paper towels. </SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">7.
It is almost exactly 2 ounces to glass a wing panel complete, so 4
ounces for a whole wing. About 2 ounces for a stab. Properly
done wings and stab glassed and painted is 2-2.5 times the weight of
monokote. </SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">8.
A second thinned coat of epoxy on the glassed wing is .75 ounces
each wing panel-1.5 oz total.</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black"> <BR> <BR> <BR></SPAN></FONT><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Pick your
poison.</SPAN></FONT><FONT color=black><SPAN style="COLOR: black">
<BR> <BR></SPAN></FONT><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Later,</SPAN></FONT><FONT
color=black><SPAN style="COLOR: black"> <BR></SPAN></FONT><FONT face=Arial
color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Mike</SPAN></FONT><FONT
color=black><SPAN style="COLOR: black"> <BR> </SPAN></FONT><TT><FONT
face="Courier New" color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black">_______________________________________________</SPAN></FONT></TT><FONT
face="Courier New" color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'"><BR><TT><FONT
face="Courier New">NSRCA-discussion mailing list</FONT></TT><BR><TT><FONT
face="Courier New">NSRCA-discussion@lists.nsrca.org</FONT></TT><BR><TT><FONT
face="Courier New">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</FONT></TT></SPAN></FONT><FONT
color=black><SPAN style="COLOR: black"> </SPAN></FONT></P></DIV>
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style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Check out AOL
Money & Finance's list of the <A
title=http://money.aol.com/special/hot-products-2007?NCID=aoltop00030000000001
href="http://money.aol.com/special/hot-products-2007?NCID=aoltop00030000000001"
target=_blank>hottest products</A> and <A
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href="http://money.aol.com/top5/general/ways-you-are-wasting-money?NCID=aoltop00030000000002"
target=_blank>top money wasters</A> of 2007.</SPAN></FONT></P></DIV>
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