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Cutting circle

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Tweakie.CNC:
Jim,

Most of the CAD / CAM software that I use has the option for an Arc Tangent Curve (straight lines) or Arcs (true circle) post processors so I think you are on the right track and should look at your PP.

Tweakie.

Jimster:
Thanks for the help guys. I've now resolved this problem. It was a problem with solidcam setting. I increased the resolution and all is perfect now

Machinehead57:
Jimster precessing this at a higher resolution will give you better results but isn't the best way plus is more confusing if you are trying to learn Gcode.
This producing short lines then arcs to acomplish a task that will require thousands of lines of code to produce.
Your circle can be produced in a few lines useing I and J word with your X,Y. This makes an actual arc like a compass from a center point.
This code will produce a 6" circle 3" from a corner at .100" deep. The one line number N45 produces the circle the other lines just tells it where and how deep.

N05 F15
N10 G00 Z0.5
N15 G00 X5.75 Y3
N20 G00 Z1
N25 G00 Z0.5
N30 G00 X5.75 Y3
N35 G01 Z0.9 F15
N40 G01 Z-0.1 F5
N45 G03 X5.75 Y3 I-2.75 J0 F15
N50 G00 Z0.5
N55 G00 X3 Y3
N60 M30

Good luck
Steve

Jimster:
Thanks for the info Steve. I am learning a bit more each day

Okcsmurf:
does someone have a gcode to cut a circle 1 inch od?

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