Re: transformers, MMC capacitors, primary Delrin holders (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 31 Jul 2007 15:23:49 -0700
From: huil888 <huil888@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: transformers, MMC capacitors, primary Delrin holders (fwd)

Scott -

The WalMart cutting boards are polyethylene, as is every cutting board I've 
ever seen sold in North America. PE is soft, semi-translucent white, easily 
"shaved" with a sharp knife, even can be knicked with a hard fingernail. A 
quick field identification can be made by heating a corner with a butane 
lighter until it just starts to smoke; the odor will be distinctly that of 
hot paraffin wax.

You definitely DON'T want to use nylon (wherever you may get it) as an 
insulating material in any high-voltage application. Nylon is extremely 
hygroscopic (at least for a polymeric material) and will easily surface 
track.

Regards,
Scott Hanson
----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, July 31, 2007 1:23 PM
Subject: Re: transformers, MMC capacitors, primary Delrin holders (fwd)


>
> ---------- Forwarded message ----------
> Date: Tue, 31 Jul 2007 16:10:11 -0400
> From: Scott Bogard <teslas-intern@xxxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: Re: transformers, MMC capacitors, primary Delrin holders (fwd)
>
> I just bought one recently (Walmart cutting board) I think it said it was
> nylon, but it may have been PE.  I'll see if I can find the wrapper (I
> probably threw it out but it won't hurt to look).
> Scott Bogard.
>
>
>>From: "Tesla list" <tesla@xxxxxxxxxx>
>>To: tesla@xxxxxxxxxx
>>Subject: Re: transformers, MMC capacitors, primary Delrin holders (fwd)
>>Date: Tue, 31 Jul 2007 08:50:48 -0600 (MDT)
>>
>>
>>---------- Forwarded message ----------
>>Date: Tue, 31 Jul 2007 09:29:52 -0500
>>From: resonance <resonance@xxxxxxxxxxxx>
>>To: Tesla list <tesla@xxxxxxxxxx>
>>Subject: Re: transformers, MMC capacitors, primary Delrin holders (fwd)
>>
>>
>>They are whatever material Walmart is using for it's cutting boards.
>>
>>Yes, Delrin, which we use for our medium and large coils is nearly $110 
>>for
>>a set of 8 blocks.
>>
>>
>>Dr. Resonance
>>
>>Resonance Research Corp.
>>www.resonanceresearch.com
>>
>>
>>----- Original Message -----
>>From: "Tesla list" <tesla@xxxxxxxxxx>
>>To: <tesla@xxxxxxxxxx>
>>Sent: Tuesday, July 31, 2007 7:25 AM
>>Subject: Re: transformers, MMC capacitors, primary Delrin holders (fwd)
>>
>>
>> >
>> > ---------- Forwarded message ----------
>> > Date: Mon, 30 Jul 2007 22:58:15 -0700
>> > From: huil888 <huil888@xxxxxxxxxxxx>
>> > To: Tesla list <tesla@xxxxxxxxxx>
>> > Subject: Re: transformers, MMC capacitors, primary Delrin holders (fwd)
>> >
>> > D.C. -
>> >
>> > Are your machined primary coil holders really Delrin acetyl polymer, or
>> > are
>> > they polyethylene? If they are made from WalMart cutting boards,  they
>>are
>> > low-density polyethylene, not Delrin. Delrin is much harder than any
>>grade
>> > of polyethylene, has a much higher density and much higher tensile
>> > strength,
>> > has a much higher melting point, and is much more expensive. Typical
>>cost
>> > of
>> > 1/2" thick Delrin sheet is at least 3-4 times more expensive than
>> > polyethylene of the same dimensions.
>> >
>> > Regards,
>> > Scott Hanson
>> > ----- Original Message -----
>> > From: "Tesla list" <tesla@xxxxxxxxxx>
>> > To: <tesla@xxxxxxxxxx>
>> > Sent: Monday, July 30, 2007 4:32 PM
>> > Subject: transformers, MMC capacitors, primary Delrin holders (fwd)
>> >
>> >
>> >>I stock the following:
>> >>
>> >> pole xmfrs, 14.4 kV, 10 kVA     can be removed from oil for lighter
>> >> shipping --- you put in Walmart plastic tank.
>> >>
>> >> MMC capacitors, Cornell-Dublier brand, 0.15 uF, 2 kV
>> >>
>> >> machining Delrin primary coil holders from WalMart cutting boards.
>> >>
>> >> Will soon have DRSSTC driver boards, micro-processor based,
>>multi-purpose
>> >> type to drive PowerEx CM600, CM1200, and CM2400, for high performance
>> >> solid state TCs.  Presently under development.
>> >>
>> >> I'm also in the process of finishing up our dual MOT coil which we 
>> >> hope
>> >> to present at our annual TeslaFest (aka Lightning on the Lawn), to be
>> >> held this year, 2 PM - 11 PM, Sat., Sept. 8th.
>> >>
>> >> If you need any of the above, contact me off-list.
>> >>
>> >>
>> >> Dr. Resonance
>> >> Resonance Research Corp.
>> >> www.resonanceresearch.com
>> >>
>> >>
>> >>
>> >>
>> >
>> >
>> >
>> >
>>
>>
>>
>>
>
> _________________________________________________________________
> http://liveearth.msn.com
>
>
>
>