Re: [TCML] Primary coil supports

[bartb <bartb@xxxxxxxxxxxxxxxx>]

Hi Steve,

I have used wood (my 8.5" diam. coil and my 13" diam. coil). But, I 
didn't simply set the primary winding on the wooden runners. I first put 
the runners in the oven and dried them out (I used oak), and then 
varnished. After drilling holes through the runners for tie down, I also 
cut acrylic strips and set those on top of the runners. I haven't had 
any problems, even at 10kva pig power.

Here's a quick photo where the acrylic runners are visible.
http://www.classictesla.com/photos/tgk/21.jpg

Here's a 10 year old photo (back in Hopkins, MN) using the same primary 
(and why I stopped using strike rings about 7 years ago). Also note the 
banana holders holding up the hv lines (early days).
http://www.classictesla.com/photos/bart/5199-17.jpg

So it can be done. I've arced through wood like everyone has mentioned, 
but it really doesn't take a lot of standoff distance to prevent wood 
arcing issues if the wood is sealed, so yes, wood can be used (just be 
smart about it).

Take care,
Bart

Stephen J. Hobley wrote:
> Is wood a bad choice for primary coil supports? 
> I see a lot of plastic being used, but I seem to be able to work more cleanly in wood...
>  
> Also can I enamel the primary coil? 
> Wood and shiny copper has a nice 'Edwardian' feel to it...
>  
> Furthermore - when building an MMC - is perf board OK to mount the caps? 
> Or is there something more suitable?
>  
> Steve
>  
> Stephen Hobley Photography
> www.stephenhobley.com
> 317 201 4281
>  
> The Laser Harp Project - www.stephenhobley.com/build
>
>  
>   
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