Sent: Monday, October 01, 2018 11:57 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] Cheap large VDG terminals
I could never effectively prevent Corona forming on the edges of the tape,
even after trying a few different brands and spending much time smoothing
as flush as possible.
I found that a thin latex band 2" wide around the area pretty much solved
that. In fact I used a belt I made that was too short, and just re-spliced
it even shorter to circle the globe tightly. I use old hard disk magnets
inside the globe to actually keep the two sections in place. The latex band
also has the advantage of easy access to the internals and leaves no sticky
residue.
It's funny that after all the time and pain I put into more complex
solutions in the end some of the simplest ones have been the most
successful for me.
I am actually thinking of using these large bowls to build a giant water
powered induction machine - they have a great steampunk look when joined :)
On Mon, Oct 1, 2018, 5:28 PM <cn8@xxxxxxx> wrote:
True--It's best to have only metal on a VDG terminal. Any insulator will
acquire a surface charge which will promote spark formation. The higher
the
insulator stands above the metal, the more it will cause sparks or
coronas.
The aluminum metal tape that Ace Hdwe sells is the best for attaching the
electrode halves together. Be sure to slick down any edges or bumps.
Especially with a high impedance source like a VDG, it's best to minimize
insulators in high voltage designs.
--- Carl
-----Original Message-----
From: Tesla <tesla-bounces@xxxxxxxxxx> On Behalf Of Doug
Sent: Sunday, September 30, 2018 2:28 PM
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Subject: Re: [TCML] Cheap large VDG terminals
Ikea , Blanda blank bowls no rim on them.
On 9/30/2018 4:27 PM, Matthew Sweeney wrote:
> Apparently some of those do have a mirror outer finish, you have to
> look through the pictures in the listings.
>
> On Sun, Sep 30, 2018, 3:25 PM Allen Bishop via Tesla
> <tesla@xxxxxxxxxx>
> wrote:
>
>> You could spot weld them together rim to rim then grind off half the
>> rim and mig weld them then grind off the rest of the rim and mig weld
the
rest.
>> Then grind the welds smooth and buff. Problem is the inside of the
>> bowls are mirror finish but the outside is satin not mirror.
>>
>> Allen Bishop
>> Colorado Springs
>>
>> Sent from my iPad
>>
>>> On Sep 30, 2018, at 11:58 AM, charles rakes <crakes29@xxxxxxxxx>
wrote:
>>>
>>> Split a rubber hose and use silicon rubber to attach. That's what
>>> I'd try. Charles
>>>
>>> On Sun, Sep 30, 2018 at 12:09 PM homerlea--- via Tesla
>>> <tesla@xxxxxxxxxx
>>>
>>> wrote:
>>>
>>>> Could you fasten two together and put a thick ring of insulation
>>>> around the rim to keep it from breaking out too soon?
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: Matthew Sweeney <msweeney23@xxxxxxxxx>
>>>> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
>>>> Sent: Sun, Sep 30, 2018 7:55 am
>>>> Subject: [TCML] Cheap large VDG terminals
>>>>
>>>> Beautiful mirror finish 30qt/22 inch stainless steel mixing bowls
>>>> going
>> for
>>>> $20 on eBay .
>>>>
>>>> I'm still figuring out what to do with the lip.
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