5C Step Collet Collars

[Jimsehr]

Here is pic of odd shaped part that was held by Id collet. After lathe work collet was moved to mill and slot was milled,then drilled three holes.

https://photos.app.goo.gl/vYAXFWxFKkMaLQcv2

 

[Boris Ludwig]

Interesting photo Jim, I noticed the work piece doesn't butt up against the shoulder. Does that affect the work perpendicularity or isn't it required in that operation.

I want to use these types of collets to try to make some brass end caps for rod tubes.

 

[Jimsehr]

Here is a pic of the back side of part. So you can see it butts against the shoulder of the collet.

https://photos.app.goo.gl/Bgz939vbw7Afa3Yq1

 

[Boris Ludwig]

Something I've noticed with step collets is that many of them have several ID's at different depths. Typically the smaller ID will be the deepest the next biggest will be a little shallower etc etc. Is there a reason other than different size work pieces to be held in the same collet? Or have I overlooked some basic reason?

Here's an example

 

[Jimsehr]

Something I've noticed with step collets is that many of them have several ID's at different depths. Typically the smaller ID will be the deepest the next biggest will be a little shallower etc etc. Is there a reason other than different size work pieces to be held in the same collet? Or have I overlooked some basic reason?

Here's an example

View attachment 259768

Most of these step collets have been used more than once . You bore one for job on hand. Then when you have another job you can bore it larger and reuse it again and again. You can also put them on the mill and machine any shape you have like square ,hex, etc. you can bore off center and turn excentric parts like cams.