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Lathe spindle speed and finishing speed/feed

Is there a quick rule of thumb?

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Men Ifr	19/12/2018 09:31:55
119 forum posts 10 photos	I've been looking for but struggling to find a quick rule of thumb for lathe spindle speed. Something like work diameter divide by 1000? Also how do I change parameters for finishing cuts? Higher spindle speed plus less feed rate? What is the practical limit for this?
John Haine	19/12/2018 09:59:19
5563 forum posts 322 photos	Try this: LINK In the first post is a link to a table.
Men Ifr	20/12/2018 12:19:34
119 forum posts 10 photos	That's useful though may be good to know if that's for HSS or carbide tools and there are no feeds. I found this very useful diagram from cnccookboook So the surface finish would seem to be limited by a feed so slow that the tool rubs not cuts and spindle speed limited by tool temp What's interesting is I've turned parts with much higher spindle speed than the the table from the 1st link with no problems - if that is a table for HSS tools should it be multiplied by 4 for carbide (even cheap carbide) tools? Is there a limit surface speed for aluminium because it melts? I've took feed rates below Which gives 0.5 to 0.05mm/rev in metric
JasonB	20/12/2018 12:29:20
25215 forum posts 3105 photos 1 articles	This went with the table THE CNC table is more likely for milling than turning. And your feed chart is a bit high for most hobby use, try about 1/5th of that.

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