yup,  that's why I noticed too.  I thought "touch off" would be more like "this is (0, 0, 0)"  and just hit that button once...

I guess I got lucky a few times.



On 9/10/20 5:28 PM, Dave Matthews wrote:
That is how I do it.  There are three radio buttons, one for each axis.  It
defaults to the last axis moved which is usually z.

Dave

On Thu, Sep 10, 2020, 19:01 R C <cjv...@gmail.com> wrote:

I was just playing with it a bit,


I have the idea, that , like homing is done per axis, "touching Off" is
done per axis too?



thanks,


Ron





On 9/10/20 4:50 PM, jrmitchellj wrote:
On a Mill setup, touch-off only affects the Z axis.  You will need to
find
your X0, and Y0 positions.  I use the end key to bring up the dialog and
set the offset.

--J. Ray Mitchell Jr.
jrmitche...@gmail.com



"Good enough is the enemy of excellence"author unknown


On Thu, Sep 10, 2020 at 2:51 PM R C <cjv...@gmail.com> wrote:

Hello,


this is probably a rookie question, but sometime when I do a "Touch
Off",  the Z-position indeed becomes 0,  but the X and Y are not.   Then
in teh axis program, it will still go to the "first" spot where it needs
to start milling, and in the  drawing it fllows the correct
lines/pattern,  but since the tuch off wasn't in the origin (0, 0, 0) on
the actual workpiece/part the machining is off (and consequently goes
out of the material, and starts milling air at some point.


I am wondering why that happens?   Is that a mistake I sometimes make in
Freecad, or is that something I do wrong touching off? (I am fairly sure
it is not a bug).


How can I make sure that I am actually touching off at (0, 0, 0) ?


thanks,


Ron

(sorry if I have some terminology incorrect, but you know ... rookie
here.)


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