I decided to solve it with a chip shield that mounts to the chuck side of the bearing hoop.
|Chip Shield for external chuck bearing|
|External Chuck bearing with shield in place|
I used a piece of acetate template and cut to fit to the smaller diameter of the collet behind the chuck. it works like charm! No more chip contamination and frankly, a much much easier job of cleaning up.
|Scribing and cutting retaining ring from Delrin sheet|
|Completed Delrin retaining ring for external chuck bearing chip shield|
I started with an 1/8" thick sheet of Delrin and cut it on the bandsaw and drilled holes in the correct locations. There are 8-24 through holes for mounting that finger carrier frames that I can use to mount the retaining ring.
|Acetate shield template and cut|
|Chip Shield mounted on external chuck bearing|
|External Chuck bearing and chip shield mounted|
The acetate is very thin so it doesn't need a lot of space to insert behind the chuck. Off to the races on the next projects.
|Thin chip shield in place|
This has worked so well I think I'll design a set of higher legs for the bed and a custom chip and coolant pan with a pivoting and positionable clear pivot down shield. Can't wait!!