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    Expanding Mandrel

    This might be something to accomplish your goal. https://www.leevalley.com/en-ca/shop/tools/power-tool-accessories/chucks/115528-individual-beall-ix-collets?item=44J0788 (I have nothing to do with this company ~but info the link is verboten, please delete. )
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    Magic Coins

    You’ve lost your money, sir. Coins have been altered and defaced for many, many years with no consequences except - people have Been entertained. Whether a pressed penny at an amusement park park, or a gaffed coin set, there is nothing illegal about gaffing coins. You can even make a profit...
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    my lathe needs more torque.

    I know this is an old thread but you may want to consider the following with respect to BLDC motors and controllers. When you use a cheaper motor control with these motors, they often use a sensorless control mode which detects rotor position by detecting the back EMF in the unpowered coil...
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    "Spring Type" leadscrew covers

    I wonder if the corrugated plastic that's used in wiring looms might do the job? http://www.cableorganizer.com/wire-loom/colored.html Nitrous
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    Craftex 7x8 Lathe

    I have a compact 5 and a Craftex 7x that I'm looking at putting magnetic scales on. I have the DigMAG by iGaging, but I am interested in finding a cheap, Magnetic Scale source. I used to think that rotary encoders have no value in Lathe work but I did a little research looking into it. There...
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    Craftex 7x8 Lathe

    I believe you're talking about sine error which is a fact regardless of what linear scale you use. But the quoted specs for iGaging are not great, especially in the context of a lathe. Description (from the iGaging site) Accuracy: ±0.002” per 6inch Repeatability: 0.001” Battery: 3V...
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    Craftex 7x8 Lathe

    The point about back lash in (most) rotary encoders is true, but I understand that this is acceptable due to the nature of manual lathe work. I.e. You always take up the back lash in approaching the cut. That said, the iGaging linear scales from Busybee and others aren't particularly...
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