Re: HDPE vs Wood Primary Coil Supports

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

Original poster: "Rod and Patti by way of Terry Fritz <teslalist-at-qwest-dot-net>" <rstapivic-at-cfl.rr-dot-com>

Iv'e used a garden spray bottle with dawn detergent and water
to cool the blade on the jig saw. Its messy but it keeps it cool,
also wear some kind of insulating gloves just to be safe.

good luck
Rod and Patti


At 09:13 PM 3/15/2003 -0700, you wrote:
>Original poster: "Jeremy Scott by way of Terry Fritz 
><teslalist-at-qwest-dot-net>" <supertux1-at-yahoo-dot-com>
>
>
>Wow, Baraboo, WI!
>Now there's a place I wouldn't expect to see here. :)
>
>I used to live around the corner (across the
>reservation?) from you in the Fox Hill
>trailerpark/subdivision. (Now in Madison)
>
>Anyway, thanks for the response.
>
>I plan to make my primary out of a series of 1" copper
>strips, not tubes. I figure the extra surface area
>will allow for better RF characteristics and a smaller
>more compact primary.
>
>I suppose it would not be too difficult to create
>a 1" by 1/16th wide cut with the jig saw. The biggest
>problem I have with working with HDPE is that friction
>from the sawblade tends to melt it as it's cutting.
>Almost need a chisel to carve off 'waste'...
>
>
>
>--- Tesla list <tesla-at-pupman-dot-com> wrote:
> > Original poster: "Dr. Resonance by way of Terry
> > Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>
> >
> >
> > With a higher power coil I would consider Delrin,
> > not wood (fire hazard).
> >
> > Have a local machine shop cut it for you with a
> > standard 1/2 inch dia. ball
> > nose cutter on a milling machine.  Usually takes
> > approx 30 min. to do all
> > the cuts for a standard set of 8 pcs.  Use 3/4 inch
> > wide x 1 inch high white
> > delrin (acetyl) stock.
> >
> > Dr. Resonance
> >
> > Resonance Research Corporation
> > E11870 Shadylane Rd.
> > Baraboo   WI   53913
> >
> >
> >  > My first coil used HDPE (cutting board) as the
> > primary
> >  > coil support, and it was a pain in the butt to
> > cut
> >  > that stuff accurately and cleanly. I understand
> > that
> >  > it has great RF and high voltage insulation
> >  > properties, making it an ideal dielectric for
> >  > everything from caps to primary mountings, but it
> >  > is expensive and difficult to work with.
> >
> >