Re: [CAD_CAM_EDM_DRO] Inverse of G-code

>
>
>I have a Gcode file that makes a negative image for a die/mold
>that I have
>used to cast some ceramic tiles from. Now I would like to make
>these same
>forms in copper by using a press. No problem on making the
>negative die but
>the positive one is going to be a bit of trouble if I have to code
>the thing
>by hand.
>
>

Just an idea, but I suppose it's at least possible...

Is it possible for you to zero your Z axis, manually? If so, do this so
it's at the "middle" of the thickness of your material.

Now, since G-Code is nothing more than an ASCII text file, do a global
search and replace for all the negative Z values, changing them to
positives. Should be as simple as changing the - to a +. Basically
making the Z axis moves go up, instead of down.

I've obviously not tried this, but it seems as if it would work. Do you
have a toolpath visualizer? Make a copy of your g-code file, and make
the modification. Should take all of a few minutes, if that long...

-- Chuck Knight