Re: EDGE FINDER Tip of the month

On Apr 16, 3:23 pm, raamman <raam...@xxxxxxxxx> wrote:

In my years as a machinist on the floor, most shops would walk you to
the door if you put an endmill in the drill chuck. I know for some it
may make sense to put a small one in just to do a light spot face. But
rule of thumb was absolutely no endmills in chucks.



thanx for the info guys; I like to know the "why" of why not

The "science" behind not using an edgefinder in a chuck is run-out.
Ex: If the thing runs out .010 at the end, then when you shift the .
100 to center, you're short. Yes, edgefinders are not meant to replace
an indicator but... it's just the way things used to be in the shops I
worked. The endmill in the chuck is obvious. As a test, ask one of
your coworkers if you can borrow their personal drill chuck to use
with an endmill. If it's their good one, expect them to turn you down.

--
Bill
.

Relevant Pages

  • Re: Milling with a drill press
    ... Three jaw drill chucks aren't designed for side loads. ... Depending on how small the chuck closes and how worn out it is, ... really has 'line' contact on the endmill shank. ...
    (rec.crafts.metalworking)
  • Re: Milling with a drill press
    ... Three jaw drill chucks aren't designed for side loads. ... Depending on how small the chuck closes and how worn out it is, ... really has 'line' contact on the endmill shank. ...
    (rec.crafts.metalworking)
  • Re: EDGE FINDER Tip of the month
    ... I've never done milling with a drill chuck, ... your endmill will tend to *really* want to slip up and down in the ... chuck jaws under even the slightest provocation which quite possibly will ...
    (alt.machines.cnc)
  • Re: floating tool holder - can we actually talk about metal working
    ... then put the reamer into the drill chuck to ream. ...
    (rec.crafts.metalworking)
  • Re: Why didnt this work?
    ... I had a cheap Jacobs with bad runout. ... That got me to thinking that I could fix the runout. ... fastened the drill chuck on this arbor by tightening its jaws on it ...
    (rec.crafts.metalworking)