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RE: Tungsten
Finn:
As I have said before (with a smile) get 10 coilers together, ask one
question and you get 12 answers. And probably all 12 are right.
I have seen posts that say that using a hacksaw takes muscle, time
and...more time. Yet you find it no trouble. Today, I received mail from
Scott Hanson who cautioned that the thoriated version was not as good as
pure tungsten. And that the pure variaty was OK as is.
I guess the best approach is to try what you think will work and if it does,
wonderful. If not, try something else. Like building a tank cap for $10 <big
smile>.
I will surely post the results of my electrode operation. Any bets folks?
Safety...and Goggles
Ted
Subject: Re: Tungsten
Original poster: "Finn Hammer" <f-hammer-at-post5.tele.dk>
>
> Original poster: "Ted Rosenberg" <Ted.Rosenberg-at-radioshack-dot-com>
> snip
> Once you get the rods you'll have to look into a method of
> cutting to the desired length. I have a Dremel Diamond Cutting Wheel
> ($21.00) on order.
I have said it before, and I will say it again:
It doesn`t take more than a couple of minutes, to cut a 5/16" rod of
2%thorium/tungsten with an ordinary hacksaw, equipped with an (around)
30 teeth per inch High Speed Steel (HSS) blade.
There are fancier methods around, but this is the one I resort to every
time still.
Once cut, mount the bits in an electric drill, and rotate them with it,
while you press the end of the electrode-to -be against a grinding
wheel, or a belt sander. Be garefull if you use a grinding wheel, it
tends to knock the electrode/drilllingmachine back untill a nice true
surface is obtained.
Hemispherical ends are rather easy to make this way too, and for static
gaps, my favourite, the Rukowski lookalike profile (big radius across
most of the surface, progressing into a nice small radius blending into
the shaft) -Not too hard to make.
Cheers, Finn Hammer