Anyone have any suggesetions for sfm for platinum? or even recommended feed and rpm? I am using carbide inserts in a lathe. any help will be appreciated.
Thread: feed and speed / sfm
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03-17-2006, 05:33 AM #1
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feed and speed / sfm
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03-17-2006, 05:38 AM #2
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platinum is pretty soft....why don't you experiment.....
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03-17-2006, 03:04 PM #3
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well, they are too expensive for me to 'experiment'. I've tried the settings for gold but it give me very rough finish and such. I was just wondering if anyone here have any experience working with plat. thanks.
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03-17-2006, 05:55 PM #4
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I'd use HSS steel and grind to a high positive rake, since chip flow is the typical priority when turning soft gummy materials. And, unless you are turning some 2" diameter solid round (or larger $$
$$), on a typical lathe you might have a hard time overspeeding, so just run it fast and feed it at such a rate as to give the required surface roughness.
A high positive rake tool may also curl the chips into a coil so you can find every last particle, as well
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
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