How Much Will Your Lathe Swing??

[jackieschmidt]

I would almost bet he's using a HS tool. Carbide may not like the impact of that interrupted cut (I'm looking at the bolt holes). We get work, occasionally, for the 36" Sydney. I think slow, slow on it is like 7RPM. Haven't a "brass pair", so I've never checked out top RPM. The SFM for a 36" diameter @ 350 RPM would be 3300 (SFM). Even ceramics won't stand that!

Correct, you can see the tool bit ground from a piece of 3/4 Rex 95.

 

[Richard Jones]

My big lathe has a sliding headstock, so without raising the lathe I can do about 96"

 

[shortgrass]

Correct, you can see the tool bit ground from a piece of 3/4 Rex 95.

Jackie, the view of the tool in the video was so quick, I could not see it to positively identify it.