Re: Copper Plated Toroids

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

Original poster: "Jim Lux by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Feeding steam from a teakettle through PVC pipe also works nicely to warm 
it for forming.  Filling with dry sand (warm dry sand?) will help prevent 
it from collapsing.

At some point though, it would be easier to make a form out of plaster and 
burlap, and layup fiberglass over it.


At 04:07 PM 4/3/2003 -0700, you wrote:
>Original poster: "Nick Andrews by way of Terry Fritz 
><teslalist-at-qwest-dot-net>" <nicothefabulous-at-hotmail-dot-com>
>
>At the stove/spa store I worked at, we bent sections of pvc pipe to build 
>jetted bathtubs.  We had an oven that would take about 30" long pieces of 
>pipe.  It was just an insulated box with the guts from an oven in it and 
>some racks.
>
>We cut them to length to fit between the jets, then heated them in the 
>oven until soft enough to bend (wearing gloves, of course) and install for 
>a nice rigid pipe system.  I don't remember the exact temp, maybe about 
>315 degress.  If the pvc starts to brown, it's too hot!  The largest I 
>used to bend was maybe 3in pvc, but you could try 4" and up.  If you do it 
>in sections, you can use the kitchen oven to do this.  If it cools before 
>it's perfect, just reheat and bend some more.
>
>Nick A
>
>
>
>
>
>
>>From: "Tesla list" <tesla-at-pupman-dot-com>
>>To: tesla-at-pupman-dot-com
>>Subject: Copper Plated Toroids
>>Date: Mon, 31 Mar 2003 00:19:25 -0700
>>
>>Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" 
>><Zimtesla-at-aol-dot-com>
>>
>>Re use of copper plating over conductive paint.
>>
>>I have been looking into this idea myself. I have been looking for some 
>>source for PVC or ABS bent pipe which could be glue together to form the 
>>substrate. Four ninety degree bends would work. I have found some long 
>>radius bends that would give too large of a diameter for the cross section.
>>
>>If anyone on the list has run across PVC short radius bends of around six 
>>inches diameter, I would be interested. The painting and plating would be 
>>time consuming but the result might be worth it.
>>Jim