Today I'm revisiting the Hardinge-Sjogren 5C Speed-Collet Chuck that I cleaned up in a previous video. When we last left it, it had a considerable amount of runout, and a not inconsiderable amount of speculation in the video comments about what might be causing it. Today we'll get to the bottom of it and do whatever it takes to fix it. We'll start with the easy stuff and let things escalate from there.

Tools used in this video:
*This site contains affiliate links for which I may be compensated

NSK Emax Evolution Standard with Lever Handpiece (Amazon*): https://amzn.to/3FdKMBx
Bambu Lab X1-Carbon: https://bit.ly/3XzuET9
Bambu Lab X1-Carbon Combo: https://bit.ly/3JzYQaX
Bambu Lab Filaments: https://bit.ly/3pusOqd
Aventor Magnetic Indicator Holder (Amazon*): https://amzn.to/46IeoTl
Mitutoyo .0001" Dial Indicator (Amazon*): https://amzn.to/3FgUMdn
Starrett Automatic Center Punch (Amazon*): https://amzn.to/3GWg6VV
Klein Tools Strap Wrench (Amazon*): https://amzn.to/44FdUvX
Bondhus Metric Hex Key Set (Amazon*): https://amzn.to/3eqZzwb
Bondhus SAE Hex Key Set (Amazon*): https://amzn.to/3h9bJLZ
Milwaukee Brushless 3/8" Impact (Amazon*): https://amzn.to/3uxwHJ4
3/8" Allen Driver Impact Socket Set (Amazon*): https://amzn.to/3oylrei
5C Collets Set - Imperial (Amazon*): https://amzn.to/3mOcmcQ
5C Collet Set - Metric (Amazon*): https://amzn.to/3rsBz00
HFS 190-Piece (0.061-0.250") Gage Pin Set Minus (Amazon*): https://amzn.to/2DDSAf3
HFS 250-Piece (0.251-0.500") Gage Pin Set Minus (Amazon*): https://amzn.to/3rGdnMT
HFS 125-Piece (0.501-0.625") Gage Pin Set Minus (Amazon*): https://amzn.to/3PMIxKm
HFS 125-Piece (0.626-0.750") Gage Pin Set Minus (Amazon*): https://amzn.to/3ZRWSK2
Vermont Gage 0.750" Gage Pin (Amazon*): https://amzn.to/32Sdrsk
Angle Block Set (Amazon*): https://amzn.to/2R3Lews

Raw Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...

00:00 Intro
00:35 Measuring where we're starting
04:15 Checking the adapter
06:13 Clocking the adapter
09:56 Clocking the chuck body halves
12:10 Better - Not great
15:26 Copying the existing taper
17:30 How not to dress a stone
18:30 Grinding - First Attempt
20:52 Measuring results
22:40 Assessing the contact points
23:54 In order to form a more perfect angle
24:56 Grinding - Second Attempt
26:32 Final Results
29:31 Conclusion