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CNC plasma with THC and floating head switch

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Published on Aug 11, 2008

plasma, mp1000thc, 18ga steel, 21amps, 120ipm, 127volts
Here's the code you can write in the post processor section to run "before feed" as:
N5 G28.1 Z.0
N6 G92 Z0
N7 G00 Z.73
N8 G92 Z0
N9 G00 Z-.2
N10 M03

the G codes & what they do can be found in mach2/mach3 manual downloadable from:
http://www.machsupport.com/documentat...
basically the G28.1 is go to home switch, the G92 erases all other offsets, the Z.73 is the switch travel + any distance back to where you want zero to be (your number will be different), G92 erases all other offsets again and defines Z as (in this case) 0. then move to Z-.2 (your number may be different here) to pierce height, and M03 is torch on. Just program that to run before any feed move on the plasma & you got it.

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