<br><font size=2 face="sans-serif">Laquer thinner is fine...as you state
it is a blend, and works well...no water</font>
<br><font size=2 face="sans-serif"><br>
<br>
<br>
Gray Fowler<br>
Principal Chemical Engineer<br>
Composites Engineering</font>
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<td width=40%><font size=1 face="sans-serif"><b>"Karl G. Mueller"
<kgamueller@rogers.com></b> </font>
<br><font size=1 face="sans-serif">Sent by: nsrca-discussion-bounces@lists.nsrca.org</font>
<p><font size=1 face="sans-serif">04/17/2006 09:20 AM</font>
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<td><font size=1 face="sans-serif">Re: [NSRCA-discussion] Thinning Hobbypoxy...?</font></table>
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<br><font size=2>Gray,</font>
<br><font size=3> </font>
<br><font size=2>I have been using Lacquer Thinner with good success. It
contains all</font>
<br><font size=2>of the ingredients mentioned like Toluene, methyl ethyl
ketone, methanol</font>
<br><font size=2>and acetone. Do you see anything why it should not be
used as a thinner</font>
<br><font size=2>for epoxy ?</font>
<br><font size=3> </font>
<br><font size=2>Karl G. Mueller</font><font size=2 color=blue><u><br>
</u></font><a href=mailto:kgamueller@rogers.com><font size=2 color=blue><u>kgamueller@rogers.com</u></font></a>
<br><font size=3>----- Original Message ----- </font>
<br><font size=3><b>From:</b> </font><a href=mailto:gfowler@raytheon.com><font size=3 color=blue><u>Gray
E Fowler</u></font></a><font size=3> </font>
<br><font size=3><b>To:</b> </font><a href="mailto:nsrca-discussion@lists.nsrca.org"><font size=3 color=blue><u>NSRCA
Mailing List</u></font></a><font size=3> </font>
<br><font size=3><b>Sent:</b> Monday, April 17, 2006 9:46 AM</font>
<br><font size=3><b>Subject:</b> Re: [NSRCA-discussion] Thinning Hobbypoxy...?</font>
<br>
<br><font size=2 face="sans-serif"><br>
Del</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
Sorry for a late reply...was on Vacation.</font><font size=3> <br>
</font><font size=2 face="sans-serif"><b><br>
DO NOT use rubbing alcohol. </b><br>
I realize that many advocate this and swear it works but it is not a good
idea. That 90% means 90% isopropyl and 10% water. Isopropyl is not an efficient
<br>
epoxy solvent and worse- water messes up the amine curing agents,,,badly.
you will lose fuel resistance and make the cure soft and gummy.</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><b><br>
IF there is no polystyrene</b> foam (wing cores, some mfgs "core"
fuse structure) then use acetone or methyl ethyl ketone (MEK). These are
much better and will ensure total evaporation from a thin "fuelproofing"
application. </font><font size=3><br>
</font><font size=2 face="sans-serif"><br>
If there is polystyrene foam then an alcohol must be used. Methyl alcohol
is the best, but semi hard to find. Ethyl alcohol is second best and is
usually called "denatured alcohol" which means it is100% Ethanol
with a nasty tasting additive (Everclear has water too).</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><br>
Home Depot/Lowes has these solvents.</font><font size=3> </font>
<p><font size=2 face="sans-serif">In any case no puddling and thickness
build up allowed.</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
Also to improve the quality of Hobby poxy cure (the real slow cure stuff)
Mix the epoxy and allow to sit in a mass (ex-a cup)for 15-30 minutes before
thinning.</font><font size=3> </font><font size=2 face="sans-serif"><br>
This epoxy has a polyamide curing agent that requires "induction"
to ensure a really good cure.<br>
<br>
<br>
Gray Fowler<br>
Principal Chemical Engineer<br>
Composites Engineering</font><font size=3> <br>
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<td width=46%><font size=1 face="sans-serif"><b>"Del K. Rykert"
<drykert2@rochester.rr.com></b> <br>
Sent by: nsrca-discussion-bounces@lists.nsrca.org</font><font size=3> </font>
<p><font size=1 face="sans-serif">04/12/2006 06:08 PM</font><font size=3>
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<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[NSRCA-discussion] Thinning Hobbypoxy...?</font></table>
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</font><font size=2 face="Arial"><br>
I have a Question? Does anyone know of of a thinner that would be acceptable
to use to thin hobbypoxy to make it flow more freely to moisture proof..
Strength is not required. I do realize all the rules against thinning
epoxy in normal use but looking to make it less viscous, besides using
heat? Thanks for your thoughts.</font><font size=3> </font><font size=2 face="Arial"><br>
</font><font size=3> </font><font size=2 face="Arial"><br>
Del <br>
nsrca - 473</font><font size=3> </font><font size=2 face="Arial"><br>
</font><font size=3> <br>
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