Re: [CAD_CAM_EDM_DRO] Question Re: Work Offsets

Tom Benedict wrote:

>That's exactly what I did. My edge finder has a 0.200" wide tip. So I
>brought it up against the two edges, shifted it by +0.100 +0.100, and set
>that to x=0 y=0. I then switched to my tool, brought the tip down until
>it was kissing the top of the workpiece and set that to be z=0. In MDI, a
>G0X0Y0Z0 would always return the tool to that position. Which is why I
>was so suprised when a G0X0Y0Z0 in the program drove the tool straight
>into the work piece.
>
>I'm not talking about a small offset here. It buried the mill about 1"
>deep in the material before it snapped off.
>
>

This is why I NEVER use G0 (although EMC seems to allow you to slow
down a G0 just like any other move with a feed rate override). I always
set the feedrate to 50% or even 10% when testing anything that has even
a small likelyhood of doing something undesired.

Unless this is some wierd effect of the G0, I don't know what the
problem is.
I just haven't seen this sort of thing on the EMC systems I'm using.
But, the
only BDI I have is quite old, so this may be a new quirk.

Jon