200 step / rev

1/2 step mode

4000 steps per inch

Motors are tuned.

Strangeness indeed when I choose a tool smaller then 1/4 inch to cut a circle it cuts eliptical ... i have tried the code in cncsimulator and it performs a circle. Here is the code ... any one have thoughts ? It also cutting larger then what is in the wizard ... 1 inch diameter is like a 1 inch radius instead almost twice the size.

1/4 inch tool

F400

G00 Z0.5

G00 X0.875 Y0.5

G00 Z0

G01 Z-0.04 F8

G02 X0.875 Y0.5 I-0.375 J0 F400

G00 Z0.5

G00 X0.875 Y0.5

G01 Z-0.05 F400

G01 Z-0.05 F8

G03 X0.875 Y0.5 I-0.375 J0 F400

G00 Z0.5

G00 X0.5 Y0.5

M30

1/8 tool

F400

G00 Z0.5

G00 X1.1875 Y0.75

G00 Z0

G01 Z-0.04 F8

G02 X1.1875 Y0.75 I-0.4375 J0 F400

G00 Z0.5

G00 X1.1875 Y0.75

G01 Z-0.05 F400

G01 Z-0.05 F8

G03 X1.1875 Y0.75 I-0.4375 J0 F400

G00 Z0.5

G00 X0.75 Y0.75

M30

1/16 tool

F400

G00 Z0.5

G00 X0.96875 Y0.5

G00 Z0

G01 Z-0.04 F8

G02 X0.96875 Y0.5 I-0.4688 J0 F400

G00 Z0.5

G00 X0.96875 Y0.5

G01 Z-0.05 F400

G01 Z-0.05 F8

G03 X0.96875 Y0.5 I-0.4688 J0 F400

G00 Z0.5

G00 X0.5 Y0.5

M30

Thanks

Peter