3-jaw chuck faceplate adapter - video

[Jon]

3-jaw chuck faceplate adapter. By Bob's hobby machine shop. 6:03 video:

[philippacificnw]

I absolutely love the idea of having the Chuck marked with degrees, for obvious need!

I use a Proxxon lathe with only a 50mm chuck, and I have already STARTED to figure out a 36 or maybe 72 division design, but not more, as every 10° is VERY CLOSE TOGETHER!

Divisions of 0.1717" apart gives very little room for the actual seperations! I mean, You have to see them, and line them up to a pointer . . . And MAYBE add ability to get down to single degrees ? . . .

Maybe I should do it all, FIRST, on my TAIG 3" diameter Chuck!

philip, from the Great Pacific, NorthWET, Oregon Division, USA

[mklotz]

I absolutely love the idea of having the Chuck marked with degrees, for obvious need!

I use a Proxxon lathe with only a 50mm chuck, and I have already STARTED to figure out a 36 or maybe 72 division design, but not more, as every 10° is VERY CLOSE TOGETHER!

Divisions of 0.1717" apart gives very little room for the actual seperations! I mean, You have to see them, and line them up to a pointer . . . And MAYBE add ability to get down to single degrees ? . . .

There are a wide variety of 360° circular protractors available...

https://www.amazon.com/s?k=circular+...f=nb_sb_noss_1

Perhaps there is some way to attach them to a plate or directly to the chuck. Not as accurate as a dividing head but perhaps adequate for your purposes.

Also, remember that one can step off N divisions on a circle with radius R by setting the dividers to the chord calculated from:

chord = 2 R sin (180 / N)

[Note that, when N = 6, a hexagon, the chord length becomes R, the radius. Most of us learned that in grade school.]