Re: New member

John Dammeyer

I'd suggest you clean it up and add a spindle sensor and X/Z drives and use LinuxCNC or MACH to automate it.  You can still do manual operations with a CNC controller.  If you don't want full automation then something like my Electronic Lead Screw will replace the gears. 


I have my South Bend  Heavy 10LTumbler in neutral and the single lever gear box not engaged.  A single pulse per rev sensor on the spindle and a 2:1 belt drive from the 300 oz-in stepper motor to the lead screw.  Also a 1 HP VFD on the spindle with just manual knob for speed control. 


Because my South Bend has a taper attachment I never bothered adding the cross slide for fully automatic turning and tapering.  And I haven't engaged the gears in over 5 years.  But again it depends on what you want to do with the lathe when you are done.


For example:

To create a new internal tapered pulley for my mill I first made a keyed arbor between centers.


On that I turned a tapered hub with a 1.5mm thread that matched the clamping nut on the mill.  Metric thread on a 1942 imperial lathe.


Terribly porous casting.  Comes from only doing it once a year.  But the pulley blank fits perfectly on the arbor.


Tool just clears the pulley blank for turning.


Both spindle pulleys done without gears on the lathe.


John Dammeyer


"ELS! Nothing else works as well for your Lathe"

Automation Artisans Inc.






From: [] On Behalf Of Kit Maira
Sent: September-21-20 7:22 AM
Subject: [SouthBendLathe] New member


Just bought my first South Bend lathe. It is marked South Bend Workshop Precision 9” with a 3’ bed. I am told it is a 405, manufactured in 1935. Unfortunately it is missing the reversing stud and gear, as will as most of the change gears. The only gears included are marked Turning Gear 1-5 and Compound Gear 105. I am also missing the reversing stud and gear. I would like to find these parts, without buying the wrong stuff through trial and error. Anyone have these parts for sale?

I was thinking that maybe the gears could be 3D printed as a last resort, but the patterns on Thingiverse are for the later 9” model. I don’t have a 3D printer anyway, but maybe could have them made if someone has done the work already. 

In any case, thanks for having me, it is great that this resource exists.

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