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Also scroll chuck jaws are available that hold collet pads. If you have a large number pf pads lying around these are useful.
25C collets will pass...

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Some machines use push collets that hold collet pads, Warner & Swasey for instance.
A push tube operates the collet like a reverse draw tube,...

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One has 3 jaws and one has 4 jaws? I strongly believe that this is the difference but I could be wrong.
A 4 jaw scroll chuck would be 25% more accurate...

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I have had "some" success welding cast iron using a filler wire that is nickle based, I believe that NI99 is the common industry designation,...

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I suspect that a majority know what PD is and simply do not have a name for it, every component that rotates in a relationship with another rotating component...

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The only dimensions that you gave were number of teeth and OD, the OD has little effect on gears so long as it is not grossly large.
The pitch diameter...

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Both, as mentioned the pattern can not be felt or measured, it is merely a visual artifact, a Scotchbrite pad removes it, this however is not fast on...

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Was running a lathe job this morning, the X axis encoder took a steaming dump, a machine repair vendor is working on it right now, I left at 10:00 for...

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Hobbing is the "normal" way. You are right on track, gashing helps a freewheeling hobbed gear begin rotating, you found starting difficult when...

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This lathe leaves visible striations on long parts, they can not be felt or measured only seen. 25 HP motor, 12,000 lb machine.
...

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If you wire a lathe in reverse AC polarity it will make the cut part larger, this is how 3D printers work.
Nikola Tesla never saw the possibilities...

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Probably a space/time failure, most of the pixels are in the present, some are in the recent past. The line is probably a remnant of something that you...

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The operator may have been left handed or has red hair....

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You do not mention when or how either tool was inspected, both are suspect.

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59 or 61 hertz work much better, even numbers always cause problems, shielding the motor in multiple layers of aluminum foil helps when there is any chance...

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There is no standard 16 tooth gear form that generates a 1.3 OD, the closest that you will get is mentioned several times above.

Why is this...

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These are the center positions of the radii on the cutter.
The 0.000 X and 0.000 Y positions are the center of the flat on the face and the flat...

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Just an example, that was the first return in the search.

As I mentioned "similar to this"...

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I began a lathe job last Thursday, 175 parts, OD turned, drilled, bored then OD threaded 1 1/8-24. The X axis began to increase diameter every 5 parts...

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There is no common gear pitch where an 8 tooth gear generates a 1.3 OD
That being said try this, I can email you the DXF file if you wish.
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