RE: [TCML] DUMB QUESTION OF THE DAY

[William Noble <william_b_noble@xxxxxxx>]

why do you need to solder it at all?  drill a hole that is the same diameter as the wire into the edge of the dime and press the wire into the hole - the mechanical interference fit will do what you need.  Note, when I say "same size", I mean no larger, and not more than .0005 smaller - drills usually drill a little oversize, so drilling a tiny bit smaller and then putting the tungsten wire into a drill chuck and spinning it may be a way to work it in tightly


> Date: Wed, 2 Jul 2008 16:52:59 -0700
> From: evp@xxxxxxxxxxx
> To: tesla@xxxxxxxxxx
> CC:
> Subject: [TCML] DUMB QUESTION OF THE DAY
>
> I have an application in which I'd like to be able to SOFT SOLDER a
> short piece of 0.050" tungsten wire to the rim of a dime. This is for a
> spark gap which will never get warm but where I need to prevent erosion
> of the silver such as I'm getting now. I've tried a Google search and
> found hints, but only hints, that it may be possible. I could copper
> plate the stuff I think but not sure and also not sure if that would
> make it solderable. I could also, with a lot of work, tin it with
> silver solder but that's by far the method of last resort.
>
> Might also be possible to spot weld it? Doesn't matter, don't have
> the equipment.
>
> Thanks,
>
> Ed
>
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