Profile Circle on 3040

[Doddy]

Something like this (below)

40mm square containing a circle.

Spindle speed 12000rpm, tool dia 2.5mm (not critical). DOC 0.4mm, feed rate 800mm/m, plunge rate 300mm/m

( T0 : 2.5 )
G21 G90 G91.1 G64 G40
G0 Z3.0
( T0 : 2.5 )
T0 M6
( Engrave1 )
G17
M3 S12000
G0 X0.0 Y0.0
G0 Z1.0
G1 F300.0 Z-0.4
G1 F800.0 X40.0
G1 Y40.0
G1 X0.0
G1 Y0.0
G0 Z3.0
G0 X5.8579 Y5.8579
G0 Z1.0
G1 F300.0 Z-0.4
G3 F800.0 X10.0 Y2.6795 I14.1421 J14.1421
G3 X40.0 Y20.0 I10.0 J17.3205
G3 X10.0 Y37.3205 I-20.0 J0.0
G3 X5.8579 Y5.8579 I10.0 J-17.3205
G1 F300.0 Z-0.8
G3 F800.0 X10.0 Y2.6795 I14.1421 J14.1421
G3 X40.0 Y20.0 I10.0 J17.3205
G3 X10.0 Y37.3205 I-20.0 J0.0
G3 X5.8579 Y5.8579 I10.0 J-17.3205
G0 Z3.0
G0 X0.0
G0 Z0.6
G1 F300.0 Z-0.8
G1 F800.0 Y0.0
G1 X40.0
G1 Y40.0
G1 X0.0
G1 Y5.8579
G0 Z3.0
M5
M30

[dfox1787]

cheers ill try this later see what happens.

[Kev2960]

I had a similar problem with my 6040 router.The CNC Blog

[dfox1787]

I had a similar problem with my 6040 router.The CNC Blog

Improvement with your mach3 settings. Not perfect but that may be the cutter i am using.

[Clive S]

Improvement with your mach3 settings. Not perfect but that may be the cutter i am using.

You are not helping yourself. why don't you copy and paste Doddy code and give some feedback as to what is happening and take it one step at a time. You have to establish if you are losing steps or have backlash etc.

[dfox1787]

You are not helping yourself. why don't you copy and paste Doddy code and give some feedback as to what is happening and take it one step at a time. You have to establish if you are losing steps or have backlash etc.

How am i not helping myself. I ran his code but i still had issues so that.

Once i changed the acceleration the circle cut improved. it was set to 2000 but reducing it to 1500 improved the circle.

I'm going to run the cut again with the appropriate end mill.

[Clive S]

How am i not helping myself.

Because you are not actually giving any good info ie. (it was set to 2000 but reducing it to 1500 improved the circle. ) does not mean anything with the parameters that go with it.

Also you said that you ran his code!! which code Doddy's is the only code I see in this thread and that has a square and circle.

If you want help you have be more specific with the questions as the crystal ball is broken.