<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2800.1106" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT size=2>For what it's worth Lance, the Saran Wrap worked like a CHAMP
! Just pulled the first two rings, and they look damn nice, if I do say so. . .
. .</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Thanks for all the input from everyone.</FONT></DIV>
<DIV><FONT face=Arial
size=2>________________________________________________</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Van Flowers<BR>AMA: 6216 IMAC: 2229 <BR>IMAA: 26019
NSRCA: 2778<BR><A
href="http://www.rc-aerobatics.com">www.rc-aerobatics.com</A></FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2></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=s.vannostrand@kodak.com
href="mailto:s.vannostrand@kodak.com">s.vannostrand@kodak.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, September 11, 2002 12:48
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Fiberglass Question - Please
Educate me !</DIV>
<DIV><BR></DIV><BR><FONT face="Times New Roman" size=2>Van, in after the car
wax, apply some PVA. YOu can buy this at craft stores in small
quantities near where they sell plaster/molding resing/etc. Michael's
and HobbyLobby are in Dallas. Apply two coats of PVA. From a
sprayer if you can. If you don't have air equip, buy a Precor can ($3)
or use an old atomizer. PVA dissolves in water so after laying up the
parts, you can soak the mold/part in warm water and make it easier to remove.
Gray's right on the difficulty here. YOu wouldn't belive the
trouble we've had in making our own carbon mufflers. </FONT>
<BR><BR><FONT face="Times New Roman" size=2>Another idea I have, but haven't
tried, is to wrap the PVC molding pipe with Saran wrap, lay up the part,
remove the pipe and then peel off the Saran wrap from the inside. THis
would be very easy.</FONT> <BR><BR><FONT face="Times New Roman"
size=2>--Lance</FONT> <BR><BR><BR><FONT face="Times New Roman"
size=2>Van</FONT><FONT face="Times New Roman" size=3> </FONT><BR><BR><FONT
face="Times New Roman" size=2>Use the coupler, it will be much easier to
release. Apply 4 coats of real car wax to the coupler, this will release.
There are better releases but you will have to buy a pretty big quantity. The
real problem here is no matter what the release, the physical configuration
you are molding is by far the hardest to get off the mold. The best way to
remove a molded ring on a male mold is to push it off. This requires something
that will push the inside (such as a piece of pvc pipe) while something hold
the outside ring on a arbor press or similar. Hammering does not work real
well. You may be able to glue in the pipe to the coupler, then use
something like and oil filter wrench to twist the ring off.</FONT><FONT
face="Times New Roman" size=3> </FONT><BR><FONT face="Times New Roman"
size=2>It will have the natural spring back you desire.</FONT> <BR><FONT
face="Times New Roman" size=2> Carbon fiber will work just like the
fiberglass other than the fact it will be 3X stiffer. Check
<B>www.cstsales.com</B> for carbon fiber and other stuff.</FONT> <BR><FONT
face="Times New Roman" size=2> </FONT> <BR><BR><FONT
face="Times New Roman" size=2>Gray Fowler</FONT> <BR><FONT
face="Times New Roman" size=2> Principal Chemical Engineer</FONT>
<BR><FONT face="Times New Roman" size=2> Composites
Engineering</FONT><FONT face="Times New Roman" size=3>
</FONT><BR><BR><BR><BR><BR><FONT face="Times New Roman" size=2>Gray / Lance /
All,</FONT><FONT face="Times New Roman" size=3> </FONT><BR><FONT
face="Times New Roman" size=3> </FONT><BR><FONT face="Times New Roman"
size=2>I need to know what type of epoxy and release agent ( if I need that )
to get to make some fiberglass rings. Let me describe what I am trying to
make, and tell me if I am totally off base here, and what I need to do to
accomplish my task, if you can.</FONT><FONT face="Times New Roman" size=3>
</FONT><BR><FONT face="Times New Roman" size=3> </FONT><BR><FONT
face="Times New Roman" size=2>I need to make about "6" Fiberglass rings. They
need to be 4" in diameter, and about 2" wide. I have some 2" wide fiberglass
cloth that is fairly heavy, and I plan to use that for the material. When they
dry, I need to be able to make cut in them, so the ring can be spread open,
and the ring needs to have some "spring back" to it, just slightly, so it
needs to be sorta stiff.</FONT><FONT face="Times New Roman" size=3>
</FONT><BR><FONT face="Times New Roman" size=3> </FONT><BR><FONT
face="Times New Roman" size=2>I have found that a 3 1/2" PVC coupler is a
perfect side for the ring if I wrap the material on the outside. So is a glass
Miracle Whip jar ( ;-) - Hey guys, I'm not a glass guru, but I do have a
degree in MacGyver ! )</FONT><FONT face="Times New Roman" size=3>
</FONT><BR><FONT face="Times New Roman" size=3> </FONT><BR><FONT
face="Times New Roman" size=2>Can I put release agent on the coupler, or the
far, wrap my glass on this, and will it work ?</FONT><FONT
face="Times New Roman" size=3> </FONT><BR><FONT face="Times New Roman"
size=3> </FONT><BR><FONT face="Times New Roman" size=2>What working time
epoxy do I need ?</FONT><FONT face="Times New Roman" size=3> </FONT><BR><FONT
face="Times New Roman" size=2>Would Carbon Fiber Tape be better ?</FONT><FONT
face="Times New Roman" size=3> </FONT><BR><FONT face="Times New Roman"
size=2>Where should I get it ?</FONT><FONT face="Times New Roman" size=3>
</FONT><BR><FONT face="Times New Roman" size=2>How much is a round trip ticket
to your workshop so you can teach me ??? < bigger grin ></FONT><FONT
face="Times New Roman" size=3> </FONT><BR><FONT face="Times New Roman"
size=3> </FONT></BLOCKQUOTE></BODY></HTML>