Re: Carbide Inserts for Rotary Electrodes

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Jon Danniken" <danniken@xxxxxxxxxxx>

Thanks Terry, those are indeed that type I was thinking of.  That site
yielded the term "carbide button" (as opposed to bullet), and has opened up
a number of possible vendors.  I'll see what comes of this, and keep the
list updated when more information becomes available.

Jon



> Original poster: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>
>
> Hi Jon,
>
> Look into the inserts they use for heavy rock oil drilling drill
> bits.  If you look around you can buy them separately.  I have a few
> somewhere and they look really nice!  About 1/2 inch diameter by say
> 3/4 inch long with a rounded tip.
>
> I have long lost all the links, but look for oil drilling drill bit
stuff...
>
> http://www.tandtcarbide.com/
>
> Mcmaster.com might sell blank carbide rods too.
>
> I think some carbides are fairly non-conductive and others are very
> conductive??  I am not sure...
>
> Cheers,
>
>          Terry
>
>
> At 03:04 PM 9/30/2005, you wrote:
> >Thanks, D.C. What I'm looking for is something more readily available
than a
> >custom manufactured item. There was a post a few years ago regarding the
use
> >of carbide 'bullets' used in road grading or boring machines IIRC, and I
was
> >hoping someone had information regarding the types of these that were
> >working for them.
> >
> >Barring readily available screw-in inserts, I am considering brazing my
own
> >to brass stock. Any information on these, as well as the brazing process
> >itself and carbide in general, would be appreciated.
> >
> >I do realize that you have a business with this sort of thing (which is a
> >great resource), and that you might consider information of this type to
be
> >proprietary.
> >
> >I'm looking at this as a hobbyist on a shoestring (more like a dental
floss)
> >budget who is hoping other hobbyists have approached this issue before
and
> >would be willing to share their experiences and methods with another
> >hobbyist. Because the labor you provide isn't free, as much of the work I
> >can do myself means more raw materials I am able to purchase to further
my
> >hobby.
> >
> >I'm not in this for profit, just for sparks, and for the enjoyment of
> >manufacturing my own components as much as possible, including learning
new
> >techniques and methods of fabrication to further my own abilities.
> >
> >Thanks,
> >
> >Jon