DIY cnc table plasma cutter

[Rambozo]

Here is the finger bone I did for the small boc cuts in the video with each command info next to it.
The info is not in the program when it is used


G90F30 G90= absolute distance mode and F30= speed of movements
G28.1Z.5 moves the torch to touch metal top (TOP) in G speak
G92Z0.00 tells Mach 3 to zero "Z" axis
G0Z0.750 moves "Z" to 0.750" above metal
G0Z0.045 moves "Z" to 0.045" above metal
M3 turns on plasmatorch
G4P0.5 delay movement for .5 seconds
G0Z0.035 plunge torch to 0.035"
G0X1.50 move "X" for 1.5"
G0Y1.50 move "Y" for 1.5"
G0X0.00 move "X" back to 0 this is the 3rd side of the cut
G0Y0.00 move "Y: back to 0 this is the 4th side of the cut to close box cut
M5 turns off the plasma torch
G0Z0.750 moves the "Z" back to 0.750" above the metal
M30 end of program and rewind to start position

You could also now move the torch to "X" 2" and then zero "Z" and start cutting

another box like above you could cut a string of boxes by doing this over and

over again.

G0 is a rapid move, G1 is a feedrate move. Depending on your motors, they might be the same, but you should use the correct code. G0 for non cutting moves and G1 for cutting moves. Also it is not a bad idea to make sure the control is in inch mode in the beginning by adding to your first line (G70/71 or some controls G20/21 inch/mm)
For example: G90G70F30

Those, along with a few other G codes are modal and stay in effect until changed, so you can't depend on what setting they are at when your program starts.