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[4]

Three Jaw Chuck Video

January Project of the Month [3]
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RVJimD

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Dec 30, 2014
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#1
I made a video of my g0752 lathe about rotating the jaws from one position to the other to compare and observe the accuracy of each configuration. I thought somebody might get something out of it, probably me more than anyone, especially if you guys watch it! Remember I'm still a new hobby machinist and I'm most definitely learning as I go, so don't hesitate to help educate me.

My test bar was a simple piece of scrap 3/4" steel from the hardware store.


Jim
 

Ulma Doctor

Infinitely Curious
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Feb 2, 2013
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#2
Hi Jim,
if you start with a precision ground rod to indicate against, you'd get a more accurate indication of the chuck runout.

Steffan Gottswinter on youtube, took a cheap chinese chuck and made it nearly perfect.
a secondary thing he did was to take a couple thousandths off the chuck register, and used an indicator and test bar and a copper tamper to set the chuck run out to near zero
if i can find a link, i'll post it
 
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