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Message No. 10214, Started by ddelaiar on 12/17/02 Grinding Tungsten I'm working on creating some prototypes for an electrode that is used in radio-frequency spine surgery.  The tip of the tungsten wire must be rounded out and I have used just about everything I can find to try and grind a smooth finish to these tips with no luck.  If some one could direct me to the proper tool for this, I would much appreciate it.  My company is not opposed to spending money for necessary tools, so cost is not so much an option. Thanks, Dan DeLaiarro Mechanical Design Engineer

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	Bro, relax. i dont take it personally, im really inexperienced in this fiel...
	No. 10248, Posted by taurusthetenacious on 12/20/02, 13:37 PST.
	I know, but I also know that there are good ways and bad ways to impart inf...
	No. 10247, Posted by rorschach on 12/20/02, 09:48 PST.
	busting my chops is irrelevant, i am here to learn, anything you have to sa...
	No. 10245, Posted by taurusthetenacious on 12/20/02, 06:18 PST.
	Hey bud, wasn't trying to bust your chops or anything, no offense was inten...
	No. 10241, Posted by rorschach on 12/19/02, 12:02 PST.
	i was aware of it, i guess nothing we got could plasticize such a thing, i ...
	No. 10236, Posted by taurusthetenacious on 12/18/02, 17:41 PST.
	No, wait! I have more ideas! Have you tried............. Never mind!
	No. 10233, Posted by rolschwarz on 12/18/02, 13:00 PST.
	well, I pretty much got it done. A colleague has a dremel tool with a smal...
	No. 10232, Posted by ddelaiar on 12/18/02, 12:34 PST.
	A micro-sized drill chuck works well for handling wire near a fast-moving a...
	No. 10230, Posted by rolschwarz on 12/18/02, 10:27 PST.
	Taurus, Tungsten has an exceedingly high melting temp and good red strength...
	No. 10229, Posted by rorschach on 12/18/02, 10:23 PST.
	i dont think that grinding will give you the results you need, the tip is j...
	No. 10223, Posted by taurusthetenacious on 12/18/02, 08:32 PST.
	Please told us a little more. It is pure Tungsten or a Tungsten carbide....
	No. 10221, Posted by devitg on 12/18/02, 04:26 PST.
	My dad's company buys hypodermic needle stock cut to length and deburred fo...
	No. 10220, Posted by rolschwarz on 12/17/02, 13:43 PST.
	The wire is about 0.35 mm diameter. I don't need it to be perfectly round ...
	No. 10219, Posted by ddelaiar on 12/17/02, 13:33 PST.
	Can the same methods that are used to make hyposermic needles sharp be used...
	No. 10218, Posted by rolschwarz on 12/17/02, 13:32 PST.
	Have you lookied into lapping and polishing type processes? How big is t...
	No. 10217, Posted by rolschwarz on 12/17/02, 13:25 PST.
	all I need to do is take the roughness off the edges. When you're dealing ...
	No. 10216, Posted by ddelaiar on 12/17/02, 12:36 PST.
	how smooth do you need? does it need to be a spherical radius? I've seen 3 ...
	No. 10215, Posted by rorschach on 12/17/02, 12:23 PST.