I usually send the cutter to the center for inside and 1 inch away for
outside circle and then make a g1 move to the radius. In the last line is a
z move. G2 makes a 2 axis move in the Plane you describe like g17. A 3
axis move is made by g12 and most machines will not do this.
To sum up, make an approach move, add the Plane select, g17, remove the z
move from the g2 command.
On Behalf Of psleiker
Sent: Tuesday, March 27, 2012 2:00 PM
Subject: [mach1mach2cnc] using G2/G3 to cut circles
I am trying to use the following code to cut circular groves similar to
o-ring groves. I don't understand how to make this work. Any suggestions
would be greatly appreciated. Thank you
G17 G21 G40 G80 G91
G00 x2 y2
G02 x2 y2 i-2 j-2 z-1 (center the circle at 0,0)