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Re: [TCML] Disc Dia.



Tim,

"Smells bad" doesn't narrow it down too much. They all stink when you machine them.

Is it opaque red-brown (Phenolic), cherry red (fiberglass / epoxy), or translucent jade green (glass epoxy) in color?

Any of the three should work, just don't use transparent acrylic, 'cause it tends to shatter at high speeds, especially when it gets hot.

Dave
On 11/1/2013 4:58 PM, Tim Flood wrote:
Hi Dave,

The disc is machined except for drilling holes for the four electrodes. I
forget the proper name for the material, but it is a cloth/resin board that
smells really bad when machined.

Thanks for your advice. I don't mind machining a larger diameter disc if
this would improve the performance.

I'll be back in the office on Monday.

Thanks again.

Tim


On Fri, Nov 1, 2013 at 4:40 PM, David Speck <Dave@xxxxxxxxxxxxxxxx> wrote:

Tim,

Perhaps a little small, but should work fine.  6 - 8" diameter might be
more typical to give faster electrode movement (better cooling) and shorter
dwell time.

What will you fabricate your disc out of?

Dave



On 11/1/2013 3:00 PM, Tim Flood wrote:

For a SRSG, does anyone foresee any problems with disc diameter of 5.22"
and a rotating path diameter of 4.46" ? The disc will have four .25" dia.
electrodes running at 1800 rpm. HV supply will be a 15/60 NST.

Thank you. AT least it's something to talk about.

Tim Flood

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