Larry, that is essentially the chart that I described on page 47 in the manual for my 10F/TH42. There is no chart like that in the Sears Master Craftsman manual I have. Page 47 in that book is blank except for "Part 4 The Machining of Various Materials
HTH!
Bill in OKC
On Saturday, February 16, 2019, 8:48:22 PM CST, Larry Hoelscher <lgh1330@...> wrote:
Here is the badge that came with the lathe.? It should also appear in your lathe manual.
On Sat, Feb 16, 2019 at 8:14 PM Stan Gorodenski <stanlep@...> wrote:
On 2/16/2019 6:20 PM, David Beierl wrote:
Top speed of the 618 is about 3600 rpm.? Again, it's for small-diameter work that you want the higher speeds.
Hmmm. I guess you are right. I was approaching it from the the other direction. I this case there would be no reason for the max spindle rpm of the 10" to be higher than that of the 12". I'm not familiar with all this terminology - what is the 618? Stan