Thread: G/N code

Depending on your controller the n numbers are largely irrelevant. Mach 3 and linuxcnc don't need the n numbers at all

the quardenents are acual values , so cutting and paisting will make it repeat the cut pattern , you will have to adjust the z axis values for each groupe of code ( where ever a Z### is )

so >???? if its dropping 3mm per run of "same xand y value " you will have to change the first groups z axis height to 12.5cut (-2.5 last value) , the second groupes to 15mm cut( - 2.5 last value) then delete the 3rd and 4th groupes of code

just delete the header code of the block you paiste , and the footer code of the orignal ( important is mach3 sets the RPM and turns you spindle on )

might be easyer to use the scale , main page near Z axis position box , so the z axis cuts too 15mm in the same code used to cut too 10mm , you might have to back off the Feed % cince your cutting deeper

I would solve your particular problem by lying to the machine and telling it that when it is at say Z= 20mm, that it is at 25mm. The machine will then cut and extra 5mm deep.
This is a handy way of overcoming a small depth problem and I use it all the time.
For example: I often cut 6mm thick aluminium and tell the machine to cut to a total depth of 6.1mm. I use a standard Z of 20mm clearance. Sometimes (for various reasons) this will leave a small web on the bottom of the cut, so when the job is finished I tell the machine that it is at 26.1mm height and I then allow it to compleat a single cut at the new depth. This new first cut is then really at a depth of 6.1mm plus whatever the DOC I had set in the program.

Thanks guys I will have a play around it this weekend some time. David

It works. All I did was with the first set of G codes was delete the last part of the code and with the next set delete the start cut and paste all done. David