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replacing tool rest lock handle, Oneway 1224

Joined
Oct 25, 2020
Messages
460
Likes
421
Location
Minneapolis, MN
I really do enjoy my 9-month-old Oneway 1224. Size, power, luxury car ride... Except, I am just not enamored with the U-joint yoke style locking handle for the tool rest on the banjo, not from day 1. If I recall, it is the same style of handle on all of their lathes, but possibly a smaller handle and thread size. The handle is riveted into a yoke which threads into the banjo. Yes, the banjo collar the yoke threads into can be re-oriented clockwise/counterclockwise to suit the user and change the angle the handle hangs at, but I just do not like that loose-in-the-yoke style handle. But I can't help but wonder, why didn't they just spec an "adjustable handle"? These are the type of handle where the handle is attached to a threaded stud, and by way of a spring and gear teeth, the handle can be reset to any different position on the threaded stud. So, I went looking, and found what I hope will be the solution I'm seeking.

2 pics, factory yoke-style handle.
20241224_110309.jpg

20241224_110106.jpg

A German company called Kipp makes these adjustable handles (and I get the feeling that maybe they developed this style of handle a long time ago). They are available for a low price ($ teens) with a fiber re-enforced plastic handle, or a mid-price ($ 20's) cast zinc handle, both available on Amazon, Grainger, MSC, etc., or the high price ($30's) with a steel handle that I can only find from the USA rep in Michigan. Establishing that the thread is a 1/2" x 13 thread pitch (after torturing myself to conclude that it could be a very uncommon M12 x 2 thread pitch metric), I found 2 steel handle Kipp versions. I bought this first one below, because other than the silver color, the general shape of it is similar to the shape of the banjo cam lock lever. I could always paint it if I want to. The handle length is a little bit shorter than stock (1/2" or so, no functional loss there), and the threaded stud length is 20mm rather than the 15mm of the Oneway handle, so if needed I'll trim down the stud length, about 3-4mm. The adjustable handle is offset from the threaded stud at 20 degrees, which I mocked up on the lathe with the factory handle, and 20 degrees is about perfect.
1735137691453.png

This one below is a bit more streamlined looking, but it came in several colors (plastic, zinc, and steel) like this red (which I was this >< close to buying, just for the splash of color). Maybe if I'm inspired, I'll paint the one above a red color, just for fun. Nearly the same overall dimensions and handle offset as above.
1735137809961.png

I'm sure the lower cost zinc version would have been sufficient, but if I can get a lifetime piece made from steel instead, I'm going steel. And shipping was, of course, very non-Amazon-like ($16). $51 total. It should be here from Michigan in a few days, and I'll report back on its success (or failure...).

I did some 'net searching, and I could not find another person who felt the same as I do about that yoke-style handle, nor anyone who ever reported a mechanical failure with it. Here I am again, the odd-man out. But, it just bugs me, and it had to go.
 
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We call these “Bristol Locking Levers” over here. Most are cast alloy or reinforced plastic. You can get some made in stainless steel.
I prefer the plastic ones as they seem to be better quality than the alloy ones. This is also represented in the price.

I got my last order of levers from:

 
Steve, there is one glaring problem, to me, with that style of handle. The set screw that goes against the tool rest post is hardened metal. The handle part, which is spring loaded is made from a MUCH softer metal. After a year or three, the handle will fail due to the differences in the hardness of the materials. I had one that I replaced with a sliding T handle, like bench vices and on standard vices. I liked it a LOT more than the softer ones. I was a production turner, so perhaps my handles wore out more quickly because I was on the lathe so many hours per week. Still, those types of handles are planned to fail.

robo hippy
 
Hello robo- similar thoughts occured to me as I saw the choices of plastic, cast zinc, and steel for the handles, which led me to choose the steel handle version. (And being made in Germany, hopefully of higher quality steel, or at least less suspect, than from the Far East. Steel grade for the handle was not disclosed by the mfr.) On Oneway's banjo, there's a formed "bushing", or contact pad, that the threaded stud pushes against the tool rest post. I, being a casual hobby turner, and one who tightens machine fittings tight, yet not overtight (I've seen some gorillas on lathes, drill presses, vises and bandsaws...), I'm confident I'll get a few years out of this new handle. And if it goes belly-up on me, I'll pull the factory handle from the tool chest and put it back in service. We shall see...
 
I upgraded to the oneway banjo a few months ago. My first impression I wanted to hate the tool rest handle, but It’s just so easy to use! It’s extra long, so no force required to lock it, and the yoke is free so it just moves so easily. I expected it would get in the way sometimes, but that hasn’t happened yet.
 
My search for "German steel 1.0401", it's a general purpose low carbon steel, used everywhere. Also known as 1018 and C15 steel. Easy to weld, easy to machine. Probably just fine for an operational handle on a light duty machine, and I bet it will last the rest of my days. Better than cast zinc or plastic.

 
Looking at the OP’s picture again, that original lever looks quite large. I have a Midi lathe with a 14” swing and I’ve not experienced any issues with the stock lever and it’s only 2” long. I use rests up to 12” long.

IMG_2935.jpeg
 
I currently have a small pair of vice grips on my Robust. The serrations in the plier jaws match the ribs on the set post/screw almost perfectly. Some one else did this and posted a picture here on the forums. I still like the sliding T handle best. I have almost no experience with the Oneway Banjo. Many do like it.

robo hippy
 
Steve, you are the first person I've heard about that wanted to change from a Oneway lever to that gear tooth registration arrangement. I thought those gear levers were universally hated. Not only from breaking, but also for putting divots in the tool rest shaft.
 
The thing I, and many others like, is that you can adjust the position of the lever. Most seem to be serrated inside giving anything up to 8 or 10 positions? I have some tiny flag style levers and they are hexagonal so offer six positions.
I’ve not noticed any dents in the tool post before, I’ll have to take one out and have a look.
 
The one I ordered, in the description it states the "number of teeth- 24". I'm assuming this is the number of positions I can set the handle to.

I've had these on other machines before, always seemed handy and worked just fine. Usually smaller size, and plastic handles, compared to what I ordered.

I hope I hate the color! I wouldn't mind a reason to buy a can of red hammered paint.
 
The one I ordered, in the description it states the "number of teeth- 24". I'm assuming this is the number of positions I can set the handle to.

I've had these on other machines before, always seemed handy and worked just fine. Usually smaller size, and plastic handles, compared to what I ordered.

I hope I hate the color! I wouldn't mind a reason to buy a can of red hammered paint.
More teeth means smaller teeth, and that means less contact area. Don't muscle that new one!
 
The important detail I think is that any system designed to hold the tool post should not bed into it. I love that my jet uses the pinch technique with two barrel pins keyed for the post. I have the indexed lever and it grips the post masterfully.

Ymmv
 
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