11-25-2015, 12:41 PM
(This post was last modified: 11-25-2015, 12:44 PM by Roadracer_Al.)
One of the first things that spring to my mind when people ask about runout is: "are you cleaning your spindle taper each & ever time?"
There's even a wickedly expensive tool for it:
http://www.use-enco.com/1/1/82076-spindl...tools.html
Next thing that comes up is "do you have a chip impacted into the surface of the spindle taper?"
Every once in a while I will crank the table down and the quill up, and get a bright flashlight and inspect the spindle taper. Any lone shiny spots are a chip which has been jammed into and crushed flat in the taper. I have a little tiny file which I've ground and honed like a scraper specifically to remove any pimples like this from internal tapers.
If you really wanted to go whole hog, you could use some transfer blue AKA prussian blue to determine if you have high spots in the taper socket. Even a thick coat of Sharpie from a new marker will do the job.
There's even a wickedly expensive tool for it:
http://www.use-enco.com/1/1/82076-spindl...tools.html
Next thing that comes up is "do you have a chip impacted into the surface of the spindle taper?"
Every once in a while I will crank the table down and the quill up, and get a bright flashlight and inspect the spindle taper. Any lone shiny spots are a chip which has been jammed into and crushed flat in the taper. I have a little tiny file which I've ground and honed like a scraper specifically to remove any pimples like this from internal tapers.
If you really wanted to go whole hog, you could use some transfer blue AKA prussian blue to determine if you have high spots in the taper socket. Even a thick coat of Sharpie from a new marker will do the job.