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Posted by Karl Townsend on July 22, 2008, 9:24 pm
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There's been a role reversal at my place...
Whenever "The Kid" is home, I watch him machine to learn. he edge found a
part (in 15 seconds!) by flicking the edgefinder to make it wobble and then
turning the crank till it was on center.
I've always cranked till the finder "kicks" to one side. I don't have his
accurate eye sight and feel to do it that way. My results weren't as
repeatable ( I tried after he left) so I'm back to the "kick"
Karl
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Posted by on July 22, 2008, 10:54 pm
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On Tue, 22 Jul 2008 20:24:43 -0500, "Karl Townsend"
>There's been a role reversal at my place...
>
>Whenever "The Kid" is home, I watch him machine to learn. he edge found a
>part (in 15 seconds!) by flicking the edgefinder to make it wobble and then
>turning the crank till it was on center.
>
>I've always cranked till the finder "kicks" to one side. I don't have his
>accurate eye sight and feel to do it that way. My results weren't as
>repeatable ( I tried after he left) so I'm back to the "kick"
>
>Karl
>
>
Greetings Karl,
I also let it kick. But when it does I figure that the edge finder is
.0005" past the edge. So with the digital readout I move the table
0994 when using the .200 dia. edge finder and call that zero. Always
works for me.
Eric
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Posted by Robert Swinney on July 22, 2008, 11:26 pm
Please log in for more thread options I've got one of the lazer finders from Little Machine shop. It has a very fine
focus lens. If you
make the dot almost invisible then split the beam with about half on the work,
it will get you
within a gnats ass of the edge.
Bob
Swinney
Bob Swinney
There's been a role reversal at my place...
Whenever "The Kid" is home, I watch him machine to learn. he edge found a
part (in 15 seconds!) by flicking the edgefinder to make it wobble and then
turning the crank till it was on center.
I've always cranked till the finder "kicks" to one side. I don't have his
accurate eye sight and feel to do it that way. My results weren't as
repeatable ( I tried after he left) so I'm back to the "kick"
Karl
** Posted from http://www.teranews.com **
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Posted by BobH on July 22, 2008, 11:56 pm
Please log in for more thread options Karl Townsend wrote:
> There's been a role reversal at my place...
>
> Whenever "The Kid" is home, I watch him machine to learn. he edge found a
> part (in 15 seconds!) by flicking the edgefinder to make it wobble and then
> turning the crank till it was on center.
>
> I've always cranked till the finder "kicks" to one side. I don't have his
> accurate eye sight and feel to do it that way. My results weren't as
> repeatable ( I tried after he left) so I'm back to the "kick"
I use the method your son uses. It just seemed like the obvious way to me.
So if you touch the work with a spinning edge finder it will kick to one
side? I will try it and see how it goes.
Thanks,
BobH
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Posted by Curt Welch on July 23, 2008, 5:52 pm
Please log in for more thread options > Karl Townsend wrote:
> > There's been a role reversal at my place...
> >
> > Whenever "The Kid" is home, I watch him machine to learn. he edge found
> > a part (in 15 seconds!) by flicking the edgefinder to make it wobble
> > and then turning the crank till it was on center.
> >
> > I've always cranked till the finder "kicks" to one side. I don't have
> > his accurate eye sight and feel to do it that way. My results weren't
> > as repeatable ( I tried after he left) so I'm back to the "kick"
>
> I use the method your son uses. It just seemed like the obvious way to
> me. So if you touch the work with a spinning edge finder it will kick to
> one side? I will try it and see how it goes.
The instructions that came with my edge finders say to use the kick. I
hadn't heard or thought about that idea until I read the instructions and
tried it.
I certainly feel like using the kick makes the edge finding more
repeatable. But I do wonder about what the true position of the edge is
when you use the kick method.
Since I don't own a mill and have only used my edge finders with the
school's mill, (and the class is now over) I can't spend the time to
experiment and try to answer that question. The idea of assuming it's
5/10,000 over suggested by the OP seems reasonable.
I guess to experiment, what I might do is machine a piece to an accurate
width. Locate it with the edge finder, and then machine 1/1000 off
opposite edges with an offset so I could mic the new widths relative to the
old width, and relative to each new cut and see how the numbers worked out.
That is, I would leave the piece so I could mic it from an old edge, to one
new edge on one side, and from the other new edge to the opposite old edge,
and then from new edge to new edge.
The goal of course is to find a way to use the edge finder so that these
1/1000 cuts would take an equal amount off of both edges after setting the
location with the edge finder.
--
Curt Welch http://CurtWelch.Com/
curt@kcwc.com http://NewsReader.Com/
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>
>Whenever "The Kid" is home, I watch him machine to learn. he edge found a
>part (in 15 seconds!) by flicking the edgefinder to make it wobble and then
>turning the crank till it was on center.
>
>I've always cranked till the finder "kicks" to one side. I don't have his
>accurate eye sight and feel to do it that way. My results weren't as
>repeatable ( I tried after he left) so I'm back to the "kick"
>
>Karl
>
>