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I was going to ask about using CSS while parting? So far I can part Delrin (plastic) and aluminium nicely

but have never successfully parted steel. So if CSS would help I'll move it up on the list.

Ralph

On Mon, Apr 12, 2021 at 9:08 AM CLevinski <clevinski@...> wrote:

On Mon, Apr 12, 2021 at 08:50 AM, Robert Francis wrote:

HOW FOR HUNDREDS OF YEARS< HAVE MACHINISTS MANAGED TO PART ITEMS IN A LATHE????? Answer SKILL!!

Robert,

Absolutely true!

When at a Renaissance Fair in Germany some years ago, I watch an artisan make wooded chess pieces on a lathe powered by a sapling. The tree was bent over and rope ran from the tree around the spindle multiple times, and was the anchored to a foot pedal. Pressing on the foot pedal would turn the spindle and the artisan would take cuts, and then withdraw his tool when the pedal was released and the spindle spun in reverse. This was certainly a skilled individual. But I doubt that woodworkers worldwide would like to surrender their electric motors and plant saplings in their shops!

The CSS is just one more tool.?(Although I view CSS more as a tool for creating larger diameter faced surfaces without "vinyl record grooves" rather than for parting.) It just increases the RPM to keep surface speed constant as the tool is advanced in the X-axis. It does not require that the lathe be otherwise automated. Like all such tools, it does NOT replace skill! Good point!
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Regards,

Charlie
New Jersey, USA

SATTINGER’S LAW: It works better if you plug it in.
EDWARD'S LAW: It works even better if you turn it on.

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Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer