Re: [TCML] Construction Query - Use of Metal Fixing

[Michael Gray <graymp89@xxxxxxxxx>]

Okay, well I'm not too bothered by the performance side of things with
regard to this, what I meant really was more along the lines of safety -
i.e. having non-earthed metal near the primary coil.. charge could build up
on the screw and, without any path to ground, could stay there
indefinitely, possibly becoming a danger if someone was to touch it
(unlikely, I know!). Is that non-sense? I guess the likelihood of anything
coming into contact with the screw is sufficiently low to not worry about
it.


On 13 January 2013 20:30, <mddeming@xxxxxxx> wrote:

>
> HI,
>
>
> While it will, in absolute terms, make a difference, you will probably not
> have any way of measuring it. It's orders of magnitude too low.
>
>
> Matt D.
>
>
>
> -----Original Message-----
> From: Michael Gray <graymp89@xxxxxxxxx>
> To: Tesla Coil Mailing List <Tesla@xxxxxxxxxx>
> Sent: Sun, Jan 13, 2013 2:24 pm
> Subject: [TCML] Construction Query - Use of Metal Fixing
>
>
> Hey guys
>
> I have a question regarding how I've constructed my TC framework. I made a
> conical shaped stub of wood, which sits in the middle of my primary coil,
> providing a non-permanent but pretty solid base for my secondary (PVC
> tube). Take a look at it here:
>
> http://imageshack.us/photo/my-images/338/img20130113184500.jpg/
>
> My PVC tubing basically just goes around the outside of the middle stub,
> and once I've pushed it down flush with the base wood platform it is a good
> firm holder. My question concerns how I've fixed the stub to the wooden
> base; I've just screwed it down from the underside, with a metal screw, as
> you can see here:
>
> http://imageshack.us/photo/my-images/845/img20130113190413.jpg/
>
> I'm wondering if I should have either just glued it, or used a nylon
> fixing. I can't see why metal would be a problem, but I wanted to check it
> just in case - after all it is in the middle of the primary and so will be
> subjected to large magnetic fields. What do you guys think? Is this even an
> issue?
>
> Cheers
>
> Mike
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