I have run my plasma CNC about 5 years, nursing “dry air” issues along the way. All in all, I’ve always been able to get the job done.

Still using my original versions of Sheetcam and Mach 3. SheetCam TNG v 4.0.10 Mach3 v R3.043.022

But in the last 48 hours I am at my wits end. Everything freezes after the M03 command. (Bad air, bad consumables aside, none of my usual workarounds are working.) The torch is on but does not proceed with the cut.

If I turn OFF the “THC ON/OFF” on Mach 3, the torch will proceed with cutting, but the results are beyond lousy.

The THC is from PlasmaRoute CNC model PR301. This THC unit is made by Sound Logic. Cutter is a Thermal Dynamics A60 Cutmaster.

At this point I want to learn if my post processor is generating optimum code for the hardware and software configuration I am using. Can I do anything different to have more reliable performance of my THC? If anyone can chime in and let me know if I should be focused on SheetCam, or Mach3, or something else, I’d greatly appreciate the help.

I’ve read the post at the following link, which is why I am asking about my settings:

https://www.machsupport.com/forum/index.php?topic=20303.0 Here is my post processor code and some pics.

Thanks!

N0000 (Filename: Sportsman Nested 48x48 P1.tap)

N0010 (Post processor: x_plasma_scribe140.scpost)

N0020 (Date: 10/24/2017)

N0030 G20 (Units: Inches)

N0040 G53 G90 G40

N0050 F1

N0060 (Part: Sportsman Nested 48x48)

N0070 (Process: Outside Offset, out, T6: Steel 12ga .105 volt 108 amps 40)

N0080 G00 Z1.0000

N0090 X12.3182 Y-0.7036

N0100 Z0.1800

N0110 G28.1 Z0.12

N0120 G92 Z0.0

N0130 G00 Z0.1400

N0140 G92 Z0.0

N0150 G00 Z0.1800

N0160 M03

N0170 G04 P1

N0180 G02 X12.4260 Y-0.7169 I0.0473 J-0.0605 F80.0

N0190 G01 X12.4349 Y-0.7283 F80

N0200 X16.7775 Y-6.2865

N0210 G03 X16.8001 Y-6.2930 I0.0158 J0.0123 F80.0

N0220 G01 X23.4281 Y-3.8806 F80

N0230 G03 X23.4413 Y-3.8611 I-0.0068 J0.0188 F80.0

N0240 G01 X23.1951 Y3.1880 F80

N0250 G03 X23.1806 Y3.2066 I-0.0200 J-0.0007 F80.0

N0260 G01 X16.4004 Y5.1508 F80

N0270 G03 X16.3783 Y5.1427 I-0.0055 J-0.0192 F80.0

N0280 G01 X12.4341 Y-0.7048 F80

N0290 X12.4260 Y-0.7169

N0300 G02 X12.2927 Y-0.7428 I-0.0796 J0.0537 F80.0

N0310 M05

N0320 G04 P0.5

N0330 G00 Z1.0000

N0340 X0.0000 Y0.0000

N0350 M05 M30