Re: Cutting with rotating cutter
Hi Johannes. You don’t need an extra crank.
As your dividing disc uses the outer edge for measurement. Just drill a suitable hole in the disc, with a suitable bolt and handle, this can be
By
Ellis Cory
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#120430
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Re: Cutting with rotating cutter
I have a big dividing disk on the left side of my lathe. So no space for the crank.
However, after some days use, I will use my new crank much more.
Johannes Lavoll.
By
Johannes
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#120429
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Re: Cutting with rotating cutter
I have found that to get the best finish when turning I hand feed toward
the head stock and power feed toward the tail stock.
By the way, high speed steel is better than carbide on our mini
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John Mattis
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#120428
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Re: Cutting with rotating cutter
Over the years, I've also considered doing this mod to add a crank to the end of the leadscrew, even though I've rarely had the "need" for this feature. But, in a recent hack, I did add a crank, but
By
Walter Wpg
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#120427
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Re: Cutting with rotating cutter
The fitted thrust washer to reduce axial play was part of my overly elaborate sealing arrangement to keep swarf out of the control box.
Roy
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Roy
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#120426
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Re: Cutting with rotating cutter
Your setup looks a lot like mine.? In addition to the crank, I made a replacement block that has pockets for thrust bearings.? That reduced the backlash quite a bit.? The OEM design has a lot of
By
Mark Kimball
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#120425
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Cutting with rotating cutter
Hi Roy
Thanks, I have now made an external lead screw crank.
Let see what happens after 144 teeth cuts on a 3.465 inch ? wheel .
Johannes Lavoll.
By
Johannes
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#120424
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Re: Here list of charts & Tables
When purchased my copy they did not? have small book. The small book came years later.
The three ring binder works better because only has what I need.
Dave
By
davesmith1800
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#120423
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Re: Here list of charts & Tables
The Machinery's Handbook I bought included a pocket reference, perhaps to reduce wear & tear on the big everything-but-the-kitchen-sink book.
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Mark Kimball
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#120422
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Re: Here list of charts & Tables
The file #8 is hardness testing I finally got down load and the unloaded.
Like Mohs hardness testing for material hunting just like pencil.? The other was magnic and tape now read to hunt materials
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davesmith1800
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#120421
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Here list of charts & Tables
I found to be very useful with mini lathe is this list of charts & Tables
It keeps from having to get? Machinist Hand Book out. I first by going machinist Hand Book but found myself washing hands a
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davesmith1800
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#120420
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Re: Dismounting the headstock bearings
How does thd plastic gear holdup over the years?
Dave
By
davesmith1800
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#120419
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Re: German screws / pencil sharpener
I remember this post past .
How is your mini lathe doing .
If need good chart on imperial to metric drill sizes. I first one just left of my lathe see photo
I send one. I have real good wall chart
By
davesmith1800
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#120418
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Re: Dismounting the headstock bearings
Ryan,
We're on the same wave length !
I already checked the lead screw for longitudinal deformation and
else as well as the half nuts plus the whole alignment. I can't say
that
By
Pierre-Raymond Rondelle
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#120417
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Re: Dismounting the headstock bearings
Thank you for your time.
I explored a lots of solutions, it seems that the reason is
merely the tight adjustment of the left bearing on the arbor. The
dismounting operations are
By
Pierre-Raymond Rondelle
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#120416
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Re: Dismounting the headstock bearings
Thanks Jon,
I don't think so because the two bearings are #30206 as per the
drawing / BOM, please refer to the documents I sent with one or my
first messages (2025 01 25).
By
Pierre-Raymond Rondelle
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#120415
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Re: Dismounting the headstock bearings
PR Here is a last photo,
Maybe you have a stack up of plastic spacers that are flexing under momentary instantaneous load?? They seem to be tight, but they might flex and return to their tight
By
Jon Rus
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#120414
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Re: Dismounting the headstock bearings
PR, Here is another image, perhaps the change in size of the shaft is interfering with the tightening of the nut and the outer stack of gears and spacers and aligning shaft keys?
Again, Good
By
Jon Rus
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#120413
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Re: Dismounting the headstock bearings
PR, Here is another image
By
Jon Rus
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#120412
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Re: Dismounting the headstock bearings
Hello PR,
I found this image
This photo of a shaft clearly shows a stepped section near the shaft bearing area of the spindle.? If yours has a similar area, you will not win easily.
Did you
By
Jon Rus
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#120411
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