JJ,
I wish I would have tried your method. Heating one NST up side down
yesterday resulted in the tar and the guts coming out in one big mess. It
was a crowd pleaser, though.
I am now in the market for two 9/60 NST. Anyone have two they would sell?
Thank you,
Tim
On Thu, Nov 7, 2013 at 2:43 PM, JJ <redrum0381@xxxxxxxxx> wrote:
> I would like to chime in on this topic, as I performed it recently. I had
> MUCH better luck freezing NSTs than cooking them. I left a couple in a deep
> freeze overnight. Pulled one out and started smacking the sides with a
> hammer. The tar shattered and fell out in large clean chunks. A pick or
> chisel works helps also as you get further in, just be careful of the
> wiring!
>
> The nice thing about this method is how clean the core comes out. Minimal
> cleaning is required afterwards.
>
> I tried cooking one on a hotplate outside. It was messy and dangerous and
> did not work well for me. Soaking in gasoline didn't work well either, but
> I only waited a week or so.
>
> -JJ
>
>
>
>
> Sent from my HTC Oneâ?¢ X, an AT&T 4G LTE smartphone
>
> ----- Reply message -----
> From: "Tim Flood" <tfloodrr@xxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Subject: [TCML] NST Repair
> Date: Wed, Nov 6, 2013 7:43 AM
>
>
> Thanks Dave. I will give that a try. There is a "country store" just down
> the road from where I work.
>
> Tim Flood
>
>
> On Tue, Nov 5, 2013 at 10:09 PM, Dave Halliday <dh@xxxxxxxxxxxxxx> wrote:
>
> > I would build a wood bracket to hold the transformer upside down
> suspended
> > over a disposable large aluminum roasting pan.
> >
> > Set it in the oven and gradually up the temperature until the tar starts
> > dripping out. Keep it there for a couple hours.
> >
> > I would pot it in mineral oil. You can get this cheap from any "country"
> > store that sells horse and other critter stuff.
> >
> > Vaseline can leave pockets of air.
> >
> > Dave
> >
> > > -----Original Message-----
> > > From: tesla-bounces@xxxxxxxxxx
> > > [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of Tim Flood
> > > Sent: Tuesday, November 05, 2013 06:25
> > > To: tesla@xxxxxxxxxx
> > > Subject: [TCML] NST Repair
> > >
> > > I heated the two 9/60 NST's in an oven hoping to repair any possible
> > > internal shorts. Luckily, this was done at an oven here at
> > > work. About one
> > > third of the tar boiled out exposing the upper portion of the
> > > windings,
> > > etc., and leaving slumped areas with porosity holes.
> > >
> > > The questions are should I reheat the transformers at a lower temp. to
> > > close up the holes then replace the lost tar with vaseline?
> > > Melt out all
> > > tar and refill completely with vaseline? Replace the
> > > transformers and not
> > > go through the above.
> > >
> > > In the meantime I'm starting on a completely new one.
> > >
> > > Thanks in advance for any advice, and yes I probably did
> > > something wrong
> > > when heating the transformers.
> > >
> > > Tim Flood
> > > _______________________________________________
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> > > Tesla@xxxxxxxxxx
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> >
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