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Re: [TCML] Rotary gap electrode holders

I've been using 5/8-inch brass hex material on my dc coil with good
results.  I'm only running between 1.2 and 2kw but don't see any problems.
I mount the hex material with 1/4-inch brass hardware.  At one point I had
the gap set too  close and after heating(my guess) the rotators stripped
all 4 stationary contacts.  No other damage as the soft brass bolts saved
the day.  I'm using a heavy duty grinder motor so it didn't even hiccup
when it happened.  It sure made a loud bang and I was sure a cap blew.
Glad it was an easy repair.    So far I've seen no need for using
tungsten.  Cheers, Charles

On Fri, Feb 1, 2013 at 2:39 PM, Colin Heath <
cohe@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

> Hello All,
> I am building a new gap at present and looking to use 4mm tungsten. I am
> torn between 2 designs open to other suggestions. I am thinking of brass
> nuts and bolts with grub screws to fold tungsten or tungsten inside Ali
> sleeve/collet then grub screw through rotor onto split collet.
> I was also looking at brass rods then threaded tungsten inserts or
> soldered on.
> Cheers,
> Colin
> Sent from my iPhone_______________________________________________
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