Re: [CAD_CAM_EDM_DRO] Loooking for cnc project book? dxf, g-code?

wthomas@... wrote:

>Hi all:
> This sounds like a good job to practice using a four jaw chuck
>on a lathe.
> My question is if you do it on the mill could you use a probe to
>pick up the location of the hole? Would it be better to probe for
>the outside? I am trying to learn more about how the probe works and
>how to use them.
>
>

Really all you need is an "edge finder". These cost about $12 - 18 at
the usual
machinst supply outfits. The CNC program would mill a bunch of spirals out
to different diameters and different depths. I have a program that writes
G-code that mills out spirals to some diameter, finishing with a circle
pass. See
makebore (first program) at http://jelinux.pico-systems.com/gcode.html

You can download the program in either DOS executable or c source,
compilable
on either Microsoft c or linux gcc.

Jon