RE: general question X

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

Original poster: "sundog by way of Terry Fritz <twftesla-at-qwest-dot-net>" <sundog-at-timeship-dot-net>

Hi All,

 To cut my 1/8 tungsten-carbide rod I notch it with an angle grinder and use
a short piece of brass bar with a deep hole drilled in it.  I push the top
of the tungsten-carbide away from the ground spot, then chock it up in the
drill and use the bench grinder to give it a flat face.  I've used this
method with great success on up to 1/4" tun-carb rod.  Beware the chips and
fragments, they're sharp!

												Shad

> -----Original Message-----
> From: Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent: Tuesday, June 19, 2001 10:32 AM
> To: tesla-at-pupman-dot-com
> Subject: Re: general question X
>
>
> 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
>
> __________________________________________________
> Do You Yahoo!?
> Spot the hottest trends in music, movies, and more.
> http://buzz.yahoo-dot-com/
>
>
>
>