09-21-2016, 08:34 PM
(09-21-2016, 12:46 PM)Dr Stan Wrote: Yes the Logans were an industrial grade machine, far stouter than the SBs. My SBs were quite long in the tooth so I no longer have to use "wind-age" for anything closer than .005" Holding .0005" is not difficult with the Logan.
BTW, the spindle bore is 1.625" or 41.275 mm in the civilized measuring system.
The Logan you have is one of the more rigid ones I've seen (and worked on.) Don't take offense but they aren't really close to the "industrial grade" ones I've run. An American Pacemaker, LeBlond NFL, Cincinnati tray top, Mori Seiki, Okuma LS, Monarch C, Meuser and dozens more are significantly more robust. I've run all but one of those (the Mori Seiki) and they are in different class altogether. Yours is often found in the "toolroom" of some maintenance departments of big companies as a support shop, so it's what I might consider a "commercial grade" but not something often found in everyday production.