Re: [CAD_CAM_EDM_DRO] Re: 5c spindle

Doug,

The block is bored through to clear the spindle (obviously <G>) and
counterbored at each end for the bearings, which are a light press fit.
The spindle just happened to be a light press fit into the bearings.
Couple of tenths lower and I would have had to do something else to
secure the spindle.
I hacked up the drawbar to add a large handwheel for tightening, and the
custom pulley I machined for the spindle is what prevents the spindle
from working it's way out of the bearings, but there's no preload.
I figure all the loads are radial. I've been using this for a year now.
Have regular on-off switch, as well as a foot switch.
Only have a couple arbors made up, but it sure is nice being able to
swap out wheels in a few seconds.
I set the spindle up a ways off the table, and can (just) swing a 12"
abrasive filament deburring wheel, which works great.

Jon