--- In taigtools@y..., "John Walters" <jwalters3@k...> wrote:
> ----- Original Message -----
> From: John Walters
> To: TAIGTOOLS@Y...
> Sent: Thursday, January 31, 2002 10:22 AM
> Subject: Taig 3-Jaw Chuck
> I would like to pass on an application that the Taig three chuck
excels at with its
> replaceable aluminum top jaws. I have built many models using gear
> W.M. Berg and PIC. The blanks have the teeth cut and the center
hole drilled. In
> order to lighten the gears by counterboring the sides I needed a
means to grip the
> gear without damaging the teeth. The solution was to modify the
aluminum top jaws.
> To do this accurately a short piece of 3/8 crs was clamped at the
inside of the steel
> master jaws. This would hold the jaws tight and center them up.
Next I turned a
> .150 deep recess in the top jaws that would fit the gear. Now with
the crs piece removed
> I could accurately and securely grip the gear without damaging the
teeth. Over the years
> I have made many custom blanks. When it is time to reload a set I
take a skim cut
> of the jaws to ensure TIR and I am up and running. I just checked
out the Taig web site
> and noticed that a 4 jaw scroll chuck is now offered. This chuck
should work even
> better since this application only clamps a specific size. I hope
this information helps
> someone with their unique chucking applications.
> John Walters
> having worked in a job shop, I can only offer that boring jaws was
part of EVERY machine setup, and once learned properly, can offer a
very rewarding machining experience. You must bore jaws to make your
parts concentric (as well as complete as many operations as possible
without re-chucking the part).