What is an edge finder and how does it work?

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Subject Author Date
What is an edge finder and how does it work? Bob La Londe 11-16-2008
Posted by Bob La Londe on November 16, 2008, 12:09 am
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 Seriously. What is an edge finder, and how does it work?



Posted by joe on November 16, 2008, 12:32 am
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 Bob La Londe wrote:

> Seriously. What is an edge finder, and how does it work?
Google is your friend.

http://www.metalwebnews.com/howto/edge/edgefind.html

Posted by Steve Lusardi on November 16, 2008, 4:10 am
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On a piece to be milled many feature's position is referenced from the edges
of the piece, like bolt holes. By placing the edge finder into the spindle
and advancing the table until contact is made, your DRO can be zeroed. Once
the piece's position is set, the tool of choice can be installed, the table
then moved to the referenced position and the appropriate work performed in
the precisely correct place. This is just one of many similar uses.
Steve

> Seriously. What is an edge finder, and how does it work?
>



Posted by on November 16, 2008, 8:46 pm
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> On a piece to be milled many feature's position is referenced from the ed=
ges
> of the piece, like bolt holes. By placing the edge finder into the spindl=
e
> and advancing the table until contact is made, your DRO can be zeroed. On=
ce
> the piece's position is set, the tool of choice can be installed, the tab=
le
> then moved to the referenced position and the appropriate work performed =
in
> the precisely correct place. This is just one of many similar uses.
> Steve
>
org...
>
> > Seriously. =A0What is an edge finder, and how does it work?



This topic was practically beaten to death in this forum not very long
ago. Search for it. One contributor did sterling work reporting on
the accuracy of his tests, etc.

Wolfgang

Posted by Martin H. Eastburn on November 16, 2008, 9:47 pm
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I'll take a stab at it.

It is a go-no go feeler gauge.

When set up the central core is on a tipsy edge of movement.

So now when it is held a slightest touch will set it off.

One eases up to the edge and it trips. Now where is the
spindle center.

The edge finder is held in center by the holder. Mill holders
are best, chuck ok and almost as good if tightened using all
three holes.

The trigger cylinder is say .125" in diameter. Taking half of this,
we determine where the center really is since we touched the edge.

It is like a balance beam on a knife edge. Pushed latterly and the
beam 'drops'.

http://en.wikipedia.org/wiki/Wiggler_(tool)

Martin

Bob La Londe wrote:
> Seriously. What is an edge finder, and how does it work?
>

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