Re: Here pig pig pig (unpotting)

To: tesla-at-pupman-dot-com
Subject: Re: Here pig pig pig (unpotting)
From: gweaver <gweaver-at-earthlink-dot-net> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Tue, 22 Sep 1998 12:27:29 -0600
Approved: terryf-at-verinet-dot-com

I have tried the frozen neon idea too, but didn't have very good luck with
it.  I hack sawed slots in the case and folded the sides down to get the
case off.  Breaking off the cold tar usually rips off the secondary coil
wires and sometimes rips off the paper and first layer of wire on one or
both of the secondary coils.  Then the coils have to be removed and repaired.

I like heating the neon in the kitchen oven at 200 degrees for about 1 hour
until the tar melts.  Once the tar is melted you can do several things.  

1. You can stir in about 3/4 to 1 cup of high voltage into the tar and let
it cool. This makes a very strong neon transformer. 

2. You can dump out the liquid tar and wipe the transformer clean with a rag
before it cools.  

3. You can also simply let the hot melted tar in the case get hard again and
this gets rid of the carbon track that shorted it out.

Gary Weaver

At 08:48 PM 9/21/98 -0600, you wrote:
>Original Poster: Keith Maddox <kmaddox-at-burgoyne-dot-com> 
>
>
>Hi Bill,  There is an easier way to "un-pot" these things.  I've un potted
>many NSTs and have found that heating them is very messy and also has the
>undesirable effect of making the tar penetrate even deeper into the
>laminates and windings.  What I do is use an air chisle to break open the
>case.  then I throw the whole black mess into the deep freezer for the
>night.  Then, in the morning, I just go out and drop the thing on the ground
>and wack it a few times with the hammer.  I then simply sweep up the mess of
>frozen tar and take it apart.
>
>Give it a try, works great.!
>
>-Keith
>
>
>Tesla List wrote:
>
SNIP...