John,
Mine was more like an air raid siren, it was hard to talk over it.......good one John!
Spindle slinger, keeps the coolant away from the lower spindle bearings. I used a scrap piece of UHMW, there is an oring in the bore as well as one on the perimeter, the inner one is a force fit on the spindle, the outer one is for turning the spindle by hand, just makes it easier.
I replaced the telephone switch as well as it definitely wasnt industrial quality, this one is more durable.........busy work ha!