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Author Topic: HOW DO I SET THE Z CUT DEPTH???  (Read 5841 times)

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HOW DO I SET THE Z CUT DEPTH???
« on: July 16, 2014, 12:52:36 PM »
OMG I'm about to snap!!!! Learning Mach3.... I've figured everything else out by trial and error but for the life of me I can't seem to find a simple answer to a simple question: How do I set the Z depth for a particular thickness of material on a cnc router?

I have a wooden substrate on the cnc table to protect the aluminum table. I have 3mm G10 to cut on top of that.

If I set the Z stop to zero at the surface of my material then:

How do I set the plunge depth to go to the bottom of the material and cut it but not all the way to the table?

If I have 2mm material, how do I change the cut depth? If I want to cut a pocket half way through a 4mm material... HOW DO I SET THE CUT DEPTH???

Thank You in advance to whomever can save me from myself in this conundrum....
« Last Edit: July 16, 2014, 12:55:00 PM by EtchNCut »
Re: HOW DO I SET THE Z CUT DEPTH???
« Reply #1 on: July 16, 2014, 01:37:52 PM »
Scratch the 2mm bit... I just need to know how to adjust the depth of my plunge for different heights above the table...

Currently the gcode shows a movement between 1.0 and 0...

Offline RICH

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Re: HOW DO I SET THE Z CUT DEPTH???
« Reply #2 on: July 17, 2014, 06:52:33 AM »
You manualy program Gcode for what you want to machine or use a program that generates the code .
Programming Handbook by Smid covers most everything you need to know and will be a valuable resource
for learning and use in the future.

RICH

Offline ger21

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Re: HOW DO I SET THE Z CUT DEPTH???
« Reply #3 on: July 17, 2014, 07:22:51 AM »
How are you creating your g-code? If using a CAM program, you set it there. If hand coding, you add a Z move to plungeto the depth you want.
If Z zero is the top of your part, then to cut 2mm deep, you'd do something like:

G1 Z-2
Gerry

2010 Screenset
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http://www.g-forcecnc.com/jointcam.html
Re: HOW DO I SET THE Z CUT DEPTH???
« Reply #4 on: September 28, 2014, 05:20:03 PM »
Basic proramme this is what your deths should look like in xilog


XG0 X=395 Y=-20 Z=-10 s=0 T=127 F=1 C=1
XL2P Y=135
XAR X=445 Y=185 r=-50 G=2#
XL2P X=1100
Re: HOW DO I SET THE Z CUT DEPTH???
« Reply #5 on: December 01, 2014, 12:10:11 AM »
Z sets the depth of your cuts g1 z-1 will cut 1mm if your machine is set to mm g1 z-2 =2mm g1 z-3 =3mm ect...  to lift g0 z1.5 would lift 1.5 mm above you work


when you drop your z depth down using keyboard leave you bit loose then once close, pull bit onto work surface and tighten