CAM question re: end of tool path

[deklerk.peter]

I use Fusion 360 and a Onefinity CNC machine.  At the end of every carving operation, the router travels back to the home position at a high rate of speed.  Sometimes it runs into my hold-down clamps.  How do make it so the generated tool paths don't include this final move?  I would like it if it just lifted up the router and ended the operation there.

[seth.madore]

Which post processor are you using, and are you also using a Machine Configuration?

[deklerk.peter]

its onefinity.cps version 43747 from the Kirbre Corp. I do not use a machine configuration

[deklerk.peter]

Seth,  I never really looked at G Code before but I can see that the last 2 lines before the m30 line are "G53 G0 Z0" which must be the one that lifts the router straight up, and then "G53 G0 X0 Y0" which must be the one I don't like that sends it racing back home.  I see I can comment out that one but that would be a pain to do every time.  I'd like that line to be omitted.  I can't see how to control it from the configuration options for my machine in Fusion 360.  I am I out of luck?

[leo.castellon]

Does your post have an option for "Home Position Center", if so, turn it off. Here is a pic from a Haas post with that option. With it off, it does not move the table after going to Z0.

LeoC

[deklerk.peter]

Mine does not have the "Home position center" checkbox unfortunately

[seth.madore]

Could you share your post processor here?

[deklerk.peter]

Here is the post processor file

[seth.madore]

And you only want it to retract in the Z, correct? (G53 Z0 controls this move)

[seth.madore · Accepted solution]

If so, you would want to edit your post processor and put a "//" in front of writeRetract as shown below:

 

[deklerk.peter]

Very cool. Thanks for helping! My hold down clamps and dust collector attachment thank you as well.