Hi Gary,

 I used to have the same problem and thought it was because the resin was
heating up too much causing the paint to release from the basswood plug. I
do a similar plug finishing method as you except I add a coat or two of
paint over the primer and then sand down from 1000 grit to 1500 then 2000
grit followed by swirl removing wax.  Then I wax the whole thing 6-8 time
with mold release wax.  I found that the paint was still sticking, even with
that much effort going into the plug.  On my last mold, the production mold
for my new Ka MHLG, I tried my old method of finishing the plug on one side
and swabbing Frekote on the other side of  the plug.  (I had never used
anything other than wax up to that point.)  Sure enough, the non-Frekoted
side stuck here and there and the coated side popped right out.  Looks like
the addition release agent did the trick.  There are several flavors of
release agent out there (Frekote, PVA etc.) to choose from.

  I have more information on plug and mold making on my website at
http://jtmodels.net if you're interested.

 Hope this helps,

Jimmy

--
Designer/System Integrator for the "Vector P" UAV
(http://www.ase.w1.com/vector.html)

For the best in sailplane protective carrying soft packs, Airtronics,
Diversity Model Aircraft,  FMA, Hobby Lobby, Hitec, Multiplex, and Trick R/C
go to:  http://jtmodels.net  or e-mail [EMAIL PROTECTED]

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Phone:  (727) 372-5914
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From: "Gary Engman" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Subject: Plug Finishing Question

I'm just finishing off the plug for a new 3 meter fuse.  In the past I've
always painted the plugs with a sandable automotive primer and then sanded
down to about 600 grit prior to waxing.  This seems to work just fine,
except that a lot of the paint comes off in the mold and has to be cleaned
out with acetone and then sanded in the mold.  The nice thing about doing it
this way is that paint really helps me to see any flaws in the plug.

Would I be better off to just wax the basswood plug?

Thanks guys.

Gary Engman
Ferndale, WA

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