5C Collet Chuck for the Lathe

Bostar 5C Collet Chuck
Bostar 5C Collet Chuck on my Grizzly G4003 with a D1-4 base

My 3 Jaw Chuck Dilemma

After installing the new Digital Read Out (DRO) on my Grizzly 4003 lathe and doing some comparison cuts with the DRO and two micrometers I was made very aware that the preexisting 3-Jaw chuck could do no better than .005″ Total Indicated Runout (TIR) on the lathe. I was craving the ability to get faster more repeatable precision.

This desire for greater precision combined with recently seeing a few random collet chuck videos on YouTube spurred me to desire an entry level 5C collet chuck.

Ebay to the Rescue: Bostar 5C Collet Chuck

I finally settled upon a Bostar 5C Collet Chuck with D1-4 cam lock spindle mount purchased on EBAY for $139. The collet chuck was promplty shipped and arrived in less than a week.

Prepping the BOSTAR 5C collet chuck for installation
Checking the total indicated runout (TIR) of the newly installed 5C collet chuck

I found the installation to be relatively straightforward and easy. The old 3 Jaw chuck did need a few taps with my trusty orange dead blow hammer to nudge it lose to get it off. The Bostar 5C Collet chuck went on and I was able to get it to under .001″ run-out in just a few minutes. Success!

Now it is time to do some machining with this thing!

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