De-burring Small Holes

I've used rotary burrs in pin vises or wooden knobs, and like how they don't have to be perfectly perpendicular to chamfer the hole. However the chamfer angle does vary between hole sizes, because it is round.
 
That's a great idea - thank you for sharing!
...Doug in Arizona
 
Thank you for posting, very nice and useful tools !
 
I salvaged a keyless chuck from a dumpster-bound cordless drill for just that purpose. Works pretty good for hole clean up/deburring with a reamer or drill of you're away from your machine, too.

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