Re: general question X

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Yurtle Turtle by way of Terry Fritz <twftesla-at-qwest-dot-net>" <yurtle_t-at-yahoo-dot-com>

I've cut tungsten with the cheap thin abrasive disks
that come with a dremmel. I cut 1/8" tungsten in half
in less than a minute. I then chucked it up in my
dremmel and spun it against a grinding disk to bevel
the edges.

Adam

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
> 
> Hi,
> 
> I have cut and filed pure tungsten.  Although, it is
> very hard and will
> quickly dull a file or saw (hack saw with the
> expensive blades), it can be
> done.  That is how I used to cut and size 1/8th inch
> tungsten rods for may
> older rotary gaps.  A file can also make a notch and
> then you can snap the
> rod to break it (safety glasses!).  I doubt you
> could make threads in
> tungsten with a tap.  Probably and ECM machine
> but...  Sears sells titanium
> drill bits that are for armor plate and such but
> drilling a hole in
> tungsten would be an "adventure".  Pure tungsten 1/8
> inch welding rods can
> be found at any welding shop and they can order
> larger sizes if you have
> enough money.  Some tungsten welding rod is slightly
> radioactive which I
> avoid especially if you are going to be grinding it.
>  The pure kind is
> common now so best to avoid the thorium kind IMHO.
> 
> I think tungsten carbide which is SUPER hard gets
> confused with the much
> softer (but still very hard) pure tungsten.  I think
> only liquid cooled
> diamond tools can touch it at the hobby level.  Marc
> has reported great
> results with tungsten carbide in spark gaps and it
> is much more available
> than big chunks of pure tungsten since it is
> commonly used for machine tool
> cutters.
> 
> Cheers,
> 
> 	Terry
> 
> At 10:07 PM 6/15/2001 -0400, you wrote:
> >Tesla list wrote:
> >
> >> Original poster: "Wade B AndB Anderson by way of
> Terry Fritz 
> >><twftesla-at-qwest-dot-net>" <nabedaw-at-juno-dot-com>
> > 
> >> hi guys,
> > 
> >> What type of material is tungsten? Hard or soft?
> is it drillable to tap?
> >> or thread?
> >
> >	Some years back, i did some EMI studies on RF
> stabilized arc
> >	welders.  The RF source is a spark gap. 
> Maintenance instructions,
> >	from the manual, included:
> >
> >		Do Not Attempt to file the gap: the points are
> >		tungsten, which is harder than the file.
> >
> >	best
> >	dwp
> >
> 
> 


=====
Adam Minchey
yurtle_t-at-yahoo-dot-com
www.geocities-dot-com/yurtle_t/index.htm

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