norrback

 But the G98 should make it go to the old Z if it is above R. This happens 

My video of the possible issue https://youtu.be/UhQNa-qiM2Q?si=csXA2nwdBLefG7v6

Ah, now I see, the g73 is not included based on this spec. read too quick. In fusion360 simulation it goes to old Z, so I don't know whats correct....

Let's see if I find someone that could test

This is the gcode in question and specially the line starting with G98... (6.5mm_drill_corners) (T465 D=6.5 CR=0 TAPER=118deg - ZMIN=-16 - drill) G90 G94 G17 G21 G28 G91 Z0 G90...

thanks! and to the web builder it will arrive with next major grbl update? cannot get my head around building for grblhal2kest printnc board locally.