Re: Temperature to melt NST tar (fwd)
---------- Forwarded message ----------
Date: Tue, 13 Jan 1998 20:58:12 -0700 (MST)
From: "Matt P." <ch038map-at-mode.lanl.k12.nm.us>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Temperature to melt NST tar (fwd)
On Tue, 13 Jan 1998, Tesla List wrote:
> ---------- Forwarded message ----------
> Date: Tue, 13 Jan 98 19:09:31 EST
> From: Gary Lau 13-Jan-1998 1851 <lau-at-hdecad.ENET.dec-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: Temperature to melt NST tar
> >From: Christopher Stone <stone-at-etak-dot-com>
> >Two quick questions, hopefully with easy answers:
> >What temperature does the tar in Neon transformers melt at? How
> >long should a transformer be cooked to repair the carbon tracks?
> I can't give you a numerical answer but can share a bit relating to the
> experience. I cooked mine in an aluminum turkey roasting pan in a
> covered Weber charcoal BBQ grill. It took about 2-3 hours to melt to a
> thick, mostly-liquid viscous state and could not possibly have been done
> indoors in a controlled oven, due to the smell, if that's what you're
> thinking. I should add that the case leaked melted tar and was a pretty
> horrible mess. Since my goal was de-potting and re-potting in melted
> vasoline, I can't comment on time to repair carbon tracks.
> Gary Lau
> Waltham, MA USA
While we're on the subject of unpotting neons, I have a question.
I have read a bit about the freezing the neon, and the chipping away the
tar as opposed to heating it. (the "cold cook" method or something like
that...) Wouldn't this eliminate a lot of the mess you get with cooking
the neons? I got the impression that it was a lot easier too, and you
wouldn't have to worry about messing up your oven...
Still working on first coil in NM,