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  1. #1
    Hi Guys

    Help Finally got plasma running working great apart from the last 20mm where the cutter turns off, I have tried on 5 or 6 different bits any ideas why please

    retired maintenance fitter Im good with things i can hit with hammer or poke with screwdriver, or even electric glue together but software drives me nuts just cant get head around it

    Thanks Guys

    Acad 2002 drawings
    Sheetcam Post
    home made cnc running mach3
    NVUM v2 bob




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  2. #2
    Clive S's Avatar
    Lives in Marple Stockport, United Kingdom. Last Activity: 14 Hours Ago Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 3,332. Received thanks 618 times, giving thanks to others 77 times. Made a monetary donation to the upkeep of the community. Is a beta tester for Machinists Network features.
    Has the air pressure dropped too low as that could make it shut off ?
    ..Clive
    The more you know, The better you know, How little you know

  3. #3
    No no matter how big the piece i cut, cut always ends up 16mm short of start

  4. #4
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 9 Hours Ago Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 2,862. Received thanks 351 times, giving thanks to others 8 times.
    What M-codes are you using to activate/deactivate the plasma? M3/M5?

    Also, what happens if you change the feedrate?
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

  5. #5
    Quote Originally Posted by m_c View Post
    What M-codes are you using to activate/deactivate the plasma? M3/M5?

    Also, what happens if you change the feedrate?



    tail end of code in picture

    will try today to increase feed rate, strange when watching machine speed seems fine but when watching video its so slow to other videos ive wached


    Cheers
    Steve

  6. #6
    It looks like the Z-axis is lifting before the end of the cut so you are losing the arc.?
    Do you have THC.?

    Post the code so can see it and I will try on our Plasma.

    Yes, it's far too slow but that's not the issue.
    -use common sense, if you lack it, there is no software to help that.

    Email: [email protected]

    Web site: www.jazzcnc.co.uk

  7. #7
    Quote Originally Posted by JAZZCNC View Post
    It looks like the Z-axis is lifting before the end of the cut so you are losing the arc.?
    Do you have THC.?

    Post the code so can see it and I will try on our Plasma.

    Yes, it's far too slow but that's not the issue.
    Thank you will post in morning its in shed, Im so happy it even moves and cuts but will increase speed, sheetcam is all new to me old head dosnt like taking in new stuff

    No THC just a floating Z

  8. #8
    Quote Originally Posted by JAZZCNC View Post
    It looks like the Z-axis is lifting before the end of the cut so you are losing the arc.?
    Do you have THC.?

    Post the code so can see it and I will try on our Plasma.

    Yes, it's far too slow but that's not the issue.
    Tried at 2000mm min double speed and cut ended at 38mm before start

    gcode from previous 1000mm min run if i can work out how to post eill email it to you


    cheers

  9. #9
    Quote Originally Posted by JAZZCNC View Post
    It looks like the Z-axis is lifting before the end of the cut so you are losing the arc.?
    Do you have THC.?

    Post the code so can see it and I will try on our Plasma.

    Yes, it's far too slow but that's not the issue.
    Tried at 2000mm min double speed and cut ended at 38mm before start

    gcode from previous 1000mm min run if i can work out how to post eill email it to you


    cheers

  10. #10
    N0010 (Filename: SATTOP.tap)
    N0020 (Post processor: Mach3 plasma THC with scriber and backlash compensation.scpost)
    N0030 (Date: 19/02/2022)
    N0040 G21 (Units: Metric)
    N0050 F1
    N0060 G53 G90 G40
    N0070 (Part: frame top1)
    N0080 (Operation: Outside Offset, 0, T1: Plasma, 1.5 mm kerf)
    N0090 G00 X206.4310 Y39.4643
    N0100 G28.1 Z10.00 F500.0
    N0110 G92 Z0.0
    N0120 G00 Z3.0000
    N0130 G92 Z0.0
    N0140 G00 Z3.0000
    N0150 M03
    N0160 G04 P0.5
    N0170 G01 Z1.5000 F100.0
    N0180 X207.1847 Y37.1340 F1000.0
    N0190 X209.3655 Y36.0192
    N0200 X217.6660 Y35.3548
    N0210 X245.9485 Y33.1759
    N0220 X245.9622 Y33.1747
    N0230 X257.9121 Y32.0346
    N0240 X276.3177 Y30.5178
    N0250 X289.2243 Y29.4741
    N0260 X295.7766 Y28.9034
    N0270 X309.3535 Y27.6711
    N0280 X323.5861 Y26.3420
    N0290 X338.4898 Y24.9162
    N0300 X358.9872 Y23.0171
    N0310 X379.8710 Y20.8373
    N0320 X379.8836 Y20.8359
    N0330 X402.5664 Y18.0812
    N0340 X402.5855 Y18.0787
    N0350 X410.9306 Y16.8473
    N0360 X420.5196 Y15.5642
    N0370 X421.1701 Y14.8208
    N0380 Y0.0000
    N0390 X420.9139 Y-0.5645
    N0400 X420.3204 Y-0.7433
    N0410 X393.6534 Y2.8350
    N0420 X352.7688 Y7.2934
    N0430 X282.5512 Y13.7434
    N0440 X195.5315 Y20.8610
    N0450 X111.1952 Y27.5031
    N0460 X83.5167
    N0470 X83.1818 Y27.5820
    N0480 X76.8552 Y30.7401
    N0490 X38.5939 Y33.8571
    N0500 X-0.0000
    N0510 X-0.5303 Y34.0768
    N0520 X-0.7500 Y34.6071
    N0530 Y35.9360
    N0540 X-0.5303 Y36.4663
    N0550 X-0.0000 Y36.6860
    N0560 X2.5750
    N0570 Y38.5024
    N0580 X2.7548 Y38.9896
    N0590 X6.6447 Y43.5413
    N0600 X7.2148 Y43.8040
    N0610 X111.2247
    N0620 X111.2875 Y43.8014
    N0630 X140.6121 Y41.3375
    N0640 X151.8055 Y40.4822
    N0650 X168.4152 Y39.1533
    N0660 X201.0605 Y36.6839
    N0670 X209.3655 Y36.0192
    N0680 M05
    N0690 G00 Z10.0000
    N0700 X0.0000 Y0.0000
    N0710 M05 M30

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