RE: Dissolve Xfmr laminations

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Loudner, Godfrey by way of Terry Fritz <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>

Hi Daniel

It took me three nights to get the laminations apart in a three phase power
transformer by carefully tapping a butter knife in between the laminations.
It is helpful to put a sharp edge on the end of the butter knife with a
grinder. Using that razor blade is a quick way to get a serious laceration.
But you must know how easy it is to have an accident in a woodworking shop.
I'm more afraid of the tools I use in woodworking than I am of high voltage
transformers. 

Godfrey Loudner  

> -----Original Message-----
> From:	Tesla list [SMTP:tesla-at-pupman-dot-com]
> Sent:	Monday, January 21, 2002 3:38 PM
> To:	tesla-at-pupman-dot-com
> Subject:	RE: Dissolve Xfmr laminations
> 
> Original poster: "Daniel Hess by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <dhess1-at-us.ibm-dot-com>
> 
> 
> An interesting update; Since I wanted to waste the windings so I could get
> to the core, I cut them off on my table saw. I used an old 'disposable'
> carbide tipped blade that I never got around to disposing. Cut through the
> copper as if it were pine. The cross section of the core looked like a
> honeycomb. Even sans the copper the core is still remarkably heavy. Now
> I've got the tedious chore of slicing the layers apart with a single edge
> razor blade. Not especially difficult but there's so dog-gone many of
> them.
> 
> "Tesla list" <tesla-at-pupman-dot-com> on 01/18/2002 05:11:19 PM
> 
> To:    tesla-at-pupman-dot-com
> cc:
> Subject:    RE: Dissolve Xfmr laminations
> 
> 
> 
> Original poster: "Loudner, Godfrey by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>
> 
> Hi Daniel
> 
> I would be concerned about stripping the coating on the laminations that
> protects them from eddy currents. I have never had any trouble getting
> apart
> the laminations with a butter knife once a few of them have been removed.
> Of
> course it might be very difficult to get out the first few laminations,
> and
> the extraction might even destroy them.
> 
> Godfrey Loudner
> 
> 
> 
>