Hi, Ray

Post the G code your having problems with for a start.

Chip

Chip,

Here's one example. The faults occur *only* on the 3-axis helical moves, yet I can take those lines, and run them over and over with no problems at all. It's only when run *with* the preceding moves that the fault occurs.

(Filename: Mount Plate Ramped.tng)

(Post processor: My Mach2 Post 090819.scpost)

(Date: 11/29/2009)

G20 (Units: Inches)

G40 G90

F10

(Part: Fixture Plate)

()

(Process: Spiral pocket, Lower Support Shaft Bore, T145: 1/2 Carbide, uncoated, 3-Flute, Aluminum Cutter, 1XSlotting [145], 0.52 in Deep)

G00 Z1.5000

(1/2 Carbide, uncoated, 3-Flute, Aluminum Cutter, 1XSlotting [145])

M06 T1 G43 H1 (1/2 Carbide, uncoated, 3-Flute, Aluminum Cutter, 1XSlotting [145])

G00 Z1.5000

M00 ( Pulley: 4 Motor: H )

M966 P8

M03 S6120 (Spindle CW 6120 RPM)

M07 (Mist coolant on)

G00 X27.6000 Y9.1579

G00 Z0.0197

G01 Z0.0000 F4.896 S6120

G03 X27.8421 Y9.3947 Z-0.3750 I0.0000 J0.2421

G03 X27.6000 Y9.1579 I-0.2421 J0.0053 F29.376

G03 X27.7365 Y9.2000 Z-0.5200 I0.0000 J0.2421 F4.896

G03 X27.7365 Y9.2000 I-0.1365 J0.2000 F29.376

G00 Z1.5000

()

(Process: Spiral pocket, Lower Retainer Shaft Bore, T145: 1/2 Carbide, uncoated, 3-Flute, Aluminum Cutter, 1XSlotting [145], 0.52 in Deep)

G00 X27.8000 Y5.4579

G00 Z0.0197

G01 Z0.0000 F4.896

G03 X28.0421 Y5.6947 Z-0.3750 I0.0000 J0.2421

G03 X27.8000 Y5.4579 I-0.2421 J0.0053 F29.376

G03 X27.9365 Y5.5000 Z-0.5200 I0.0000 J0.2421 F4.896

G03 X27.9365 Y5.5000 I-0.1365 J0.2000 F29.376

G00 Z1.5000

()

Regards,

Ray L.