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  1. #11
    Hey!

    I am experiencing the same exact issue and I was wondering if you or anyone else can help me to figure out what I am doing wrong. I am new to mach3, as I recently switched from GRBL. I am using Aspire/Vcrave to generate some gcodes so I can machine it in mach3. for some reason the mach3 keeps up-scaling any gcode I try to load like by X10!

    I have the mach3 set up to mm and the gcode is set to metric for sure. For some reason the mach3 reads millimeters as if the were centimeters, i.e if the gcode was 100 x 100 x 6 mm it show it as 100 x 100 x 6 cm!
    At this point I am not sure how to deal with this issue.
    I will be really thankful if anyone can provide help or a solution.

    Thanks in advance!

  2. #12
    How are your units set up in CAD/CAM?
    You think that's too expensive? You're not a Model Engineer are you? :D

  3. #13
    Everything is setup to mm.


    Take the gcode bellow as an example, which I have already tired. it suppose to be 35 x 35 x 1.6mm however, mach3 sees it as 35 x 35 x 1.6cm. I ran it as well as other gcodes while down-scaling mach3 to 0.10000 and they all run as they should. I am just trying to find if there's a setting I need to change in mach3.
    Thank you

    T1
    G17
    G21
    G90
    G0Z10.0000
    G0X0.0000Y0.0000S2000M3
    G0X61.8275Y126.3275Z0.5000
    G1Z-0.2000F200.0
    G1Y127.6725F200.0
    G1X63.1725
    G1Y126.3275
    G1X61.8275
    G1X60.5575Y125.0575
    G1Y128.9425
    G1X64.4425
    G1Y125.0575
    G1X60.5575
    G1X59.2875Y123.7875
    G1Y130.2125
    G1X65.7125
    G1Y123.7875
    G1X59.2875
    G1X58.0175Y122.5175
    G1Y131.4825
    G1X66.9825
    G1Y122.5175
    G1X58.0175
    G1X56.7475Y121.2475
    G1Y132.7525
    G1X68.2525
    G1Y121.2475
    G1X56.7475
    G1X55.4775Y119.9775
    G1Y134.0225
    G1X69.5225
    G1Y119.9775
    G1X55.4775
    G1X54.2075Y118.7075
    G1Y135.2925
    G1X70.7925
    G1Y118.7075
    G1X54.2075
    G1X52.9375Y117.4375
    G1Y136.5625
    G1X72.0625
    G1Y117.4375
    G1X52.9375
    G1X51.6675Y116.1675
    G1Y137.8325
    G1X73.3325
    G1Y116.1675
    G1X51.6675
    G1X50.3975Y114.8975
    G1Y139.1025
    G1X74.6025
    G1Y114.8975
    G1X50.3975
    G1X49.1275Y113.6275
    G1Y140.3725
    G1X75.8725
    G1Y113.6275
    G1X49.1275
    G1X47.8575Y112.3575
    G1Y141.6425
    G1X77.1425
    G1Y112.3575
    G1X47.8575
    G1X46.5875Y111.0875
    G1Y142.9125
    G1X78.4125
    G1Y111.0875
    G1X46.5875
    G0Z0.5000
    G0X61.8275Y126.3275
    G1Z-0.4000F762.0
    G1Y127.6725F2540.0
    G1X63.1725
    G1Y126.3275
    G1X61.8275
    G1X60.5575Y125.0575
    G1Y128.9425
    G1X64.4425
    G1Y125.0575
    G1X60.5575
    G1X59.2875Y123.7875
    G1Y130.2125
    G1X65.7125
    G1Y123.7875
    G1X59.2875
    G1X58.0175Y122.5175
    G1Y131.4825
    G1X66.9825
    G1Y122.5175
    G1X58.0175
    G1X56.7475Y121.2475
    G1Y132.7525
    G1X68.2525
    G1Y121.2475
    G1X56.7475
    G1X55.4775Y119.9775
    G1Y134.0225
    G1X69.5225
    G1Y119.9775
    G1X55.4775
    G1X54.2075Y118.7075
    G1Y135.2925
    G1X70.7925
    G1Y118.7075
    G1X54.2075
    G1X52.9375Y117.4375
    G1Y136.5625
    G1X72.0625
    G1Y117.4375
    G1X52.9375
    G1X51.6675Y116.1675
    G1Y137.8325
    G1X73.3325
    G1Y116.1675
    G1X51.6675
    G1X50.3975Y114.8975
    G1Y139.1025
    G1X74.6025
    G1Y114.8975
    G1X50.3975
    G1X49.1275Y113.6275
    G1Y140.3725
    G1X75.8725
    G1Y113.6275
    G1X49.1275
    G1X47.8575Y112.3575
    G1Y141.6425
    G1X77.1425
    G1Y112.3575
    G1X47.8575
    G1X46.5875Y111.0875
    G1Y142.9125
    G1X78.4125
    G1Y111.0875
    G1X46.5875
    G0Z0.5000
    G0X61.8275Y126.3275
    G1Z-0.6000F762.0
    G1Y127.6725F2540.0
    G1X63.1725
    G1Y126.3275
    G1X61.8275
    G1X60.5575Y125.0575
    G1Y128.9425
    G1X64.4425
    G1Y125.0575
    G1X60.5575
    G1X59.2875Y123.7875
    G1Y130.2125
    G1X65.7125
    G1Y123.7875
    G1X59.2875
    G1X58.0175Y122.5175
    G1Y131.4825
    G1X66.9825
    G1Y122.5175
    G1X58.0175
    G1X56.7475Y121.2475
    G1Y132.7525
    G1X68.2525
    G1Y121.2475
    G1X56.7475
    G1X55.4775Y119.9775
    G1Y134.0225
    G1X69.5225
    G1Y119.9775
    G1X55.4775
    G1X54.2075Y118.7075
    G1Y135.2925
    G1X70.7925
    G1Y118.7075
    G1X54.2075
    G1X52.9375Y117.4375
    G1Y136.5625
    G1X72.0625
    G1Y117.4375
    G1X52.9375
    G1X51.6675Y116.1675
    G1Y137.8325
    G1X73.3325
    G1Y116.1675
    G1X51.6675
    G1X50.3975Y114.8975
    G1Y139.1025
    G1X74.6025
    G1Y114.8975
    G1X50.3975
    G1X49.1275Y113.6275
    G1Y140.3725
    G1X75.8725
    G1Y113.6275
    G1X49.1275
    G1X47.8575Y112.3575
    G1Y141.6425
    G1X77.1425
    G1Y112.3575
    G1X47.8575
    G1X46.5875Y111.0875
    G1Y142.9125
    G1X78.4125
    G1Y111.0875
    G1X46.5875
    G0Z0.5000
    G0X61.8275Y126.3275
    G1Z-0.8000F762.0
    G1Y127.6725F2540.0
    G1X63.1725
    G1Y126.3275
    G1X61.8275
    G1X60.5575Y125.0575
    G1Y128.9425
    G1X64.4425
    G1Y125.0575
    G1X60.5575
    G1X59.2875Y123.7875
    G1Y130.2125
    G1X65.7125
    G1Y123.7875
    G1X59.2875
    G1X58.0175Y122.5175
    G1Y131.4825
    G1X66.9825
    G1Y122.5175
    G1X58.0175
    G1X56.7475Y121.2475
    G1Y132.7525
    G1X68.2525
    G1Y121.2475
    G1X56.7475
    G1X55.4775Y119.9775
    G1Y134.0225
    G1X69.5225
    G1Y119.9775
    G1X55.4775
    G1X54.2075Y118.7075
    G1Y135.2925
    G1X70.7925
    G1Y118.7075
    G1X54.2075
    G1X52.9375Y117.4375
    G1Y136.5625
    G1X72.0625
    G1Y117.4375
    G1X52.9375
    G1X51.6675Y116.1675
    G1Y137.8325
    G1X73.3325
    G1Y116.1675
    G1X51.6675
    G1X50.3975Y114.8975
    G1Y139.1025
    G1X74.6025
    G1Y114.8975
    G1X50.3975
    G1X49.1275Y113.6275
    G1Y140.3725
    G1X75.8725
    G1Y113.6275
    G1X49.1275
    G1X47.8575Y112.3575
    G1Y141.6425
    G1X77.1425
    G1Y112.3575
    G1X47.8575
    G1X46.5875Y111.0875
    G1Y142.9125
    G1X78.4125
    G1Y111.0875
    G1X46.5875
    G0Z0.5000
    G0X61.8275Y126.3275
    G1Z-1.0000F762.0
    G1Y127.6725F2540.0
    G1X63.1725
    G1Y126.3275
    G1X61.8275
    G1X60.5575Y125.0575
    G1Y128.9425
    G1X64.4425
    G1Y125.0575
    G1X60.5575
    G1X59.2875Y123.7875
    G1Y130.2125
    G1X65.7125
    G1Y123.7875
    G1X59.2875
    G1X58.0175Y122.5175
    G1Y131.4825
    G1X66.9825
    G1Y122.5175
    G1X58.0175
    G1X56.7475Y121.2475
    G1Y132.7525
    G1X68.2525
    G1Y121.2475
    G1X56.7475
    G1X55.4775Y119.9775
    G1Y134.0225
    G1X69.5225
    G1Y119.9775
    G1X55.4775
    G1X54.2075Y118.7075
    G1Y135.2925
    G1X70.7925
    G1Y118.7075
    G1X54.2075
    G1X52.9375Y117.4375
    G1Y136.5625
    G1X72.0625
    G1Y117.4375
    G1X52.9375
    G1X51.6675Y116.1675
    G1Y137.8325
    G1X73.3325
    G1Y116.1675
    G1X51.6675
    G1X50.3975Y114.8975
    G1Y139.1025
    G1X74.6025
    G1Y114.8975
    G1X50.3975
    G1X49.1275Y113.6275
    G1Y140.3725
    G1X75.8725
    G1Y113.6275
    G1X49.1275
    G1X47.8575Y112.3575
    G1Y141.6425
    G1X77.1425
    G1Y112.3575
    G1X47.8575
    G1X46.5875Y111.0875
    G1Y142.9125
    G1X78.4125
    G1Y111.0875
    G1X46.5875
    G0Z0.5000
    G0X61.8275Y126.3275
    G1Z-1.2000F762.0
    G1Y127.6725F2540.0
    G1X63.1725
    G1Y126.3275
    G1X61.8275
    G1X60.5575Y125.0575
    G1Y128.9425
    G1X64.4425
    G1Y125.0575
    G1X60.5575
    G1X59.2875Y123.7875
    G1Y130.2125
    G1X65.7125
    G1Y123.7875
    G1X59.2875
    G1X58.0175Y122.5175
    G1Y131.4825
    G1X66.9825
    G1Y122.5175
    G1X58.0175
    G1X56.7475Y121.2475
    G1Y132.7525
    G1X68.2525
    G1Y121.2475
    G1X56.7475
    G1X55.4775Y119.9775
    G1Y134.0225
    G1X69.5225
    G1Y119.9775
    G1X55.4775
    G1X54.2075Y118.7075
    G1Y135.2925
    G1X70.7925
    G1Y118.7075
    G1X54.2075
    G1X52.9375Y117.4375
    G1Y136.5625
    G1X72.0625
    G1Y117.4375
    G1X52.9375
    G1X51.6675Y116.1675
    G1Y137.8325
    G1X73.3325
    G1Y116.1675
    G1X51.6675
    G1X50.3975Y114.8975
    G1Y139.1025
    G1X74.6025
    G1Y114.8975
    G1X50.3975
    G1X49.1275Y113.6275
    G1Y140.3725
    G1X75.8725
    G1Y113.6275
    G1X49.1275
    G1X47.8575Y112.3575
    G1Y141.6425
    G1X77.1425
    G1Y112.3575
    G1X47.8575
    G1X46.5875Y111.0875
    G1Y142.9125
    G1X78.4125
    G1Y111.0875
    G1X46.5875
    G0Z0.5000
    G0X61.8275Y126.3275
    G1Z-1.4000F762.0
    G1Y127.6725F2540.0
    G1X63.1725
    G1Y126.3275
    G1X61.8275
    G1X60.5575Y125.0575
    G1Y128.9425
    G1X64.4425
    G1Y125.0575
    G1X60.5575
    G1X59.2875Y123.7875
    G1Y130.2125
    G1X65.7125
    G1Y123.7875
    G1X59.2875
    G1X58.0175Y122.5175
    G1Y131.4825
    G1X66.9825
    G1Y122.5175
    G1X58.0175
    G1X56.7475Y121.2475
    G1Y132.7525
    G1X68.2525
    G1Y121.2475
    G1X56.7475
    G1X55.4775Y119.9775
    G1Y134.0225
    G1X69.5225
    G1Y119.9775
    G1X55.4775
    G1X54.2075Y118.7075
    G1Y135.2925
    G1X70.7925
    G1Y118.7075
    G1X54.2075
    G1X52.9375Y117.4375
    G1Y136.5625
    G1X72.0625
    G1Y117.4375
    G1X52.9375
    G1X51.6675Y116.1675
    G1Y137.8325
    G1X73.3325
    G1Y116.1675
    G1X51.6675
    G1X50.3975Y114.8975
    G1Y139.1025
    G1X74.6025
    G1Y114.8975
    G1X50.3975
    G1X49.1275Y113.6275
    G1Y140.3725
    G1X75.8725
    G1Y113.6275
    G1X49.1275
    G1X47.8575Y112.3575
    G1Y141.6425
    G1X77.1425
    G1Y112.3575
    G1X47.8575
    G1X46.5875Y111.0875
    G1Y142.9125
    G1X78.4125
    G1Y111.0875
    G1X46.5875
    G0Z0.5000
    G0X61.8275Y126.3275
    G1Z-1.6000F762.0
    G1Y127.6725F2540.0
    G1X63.1725
    G1Y126.3275
    G1X61.8275
    G1X60.5575Y125.0575
    G1Y128.9425
    G1X64.4425
    G1Y125.0575
    G1X60.5575
    G1X59.2875Y123.7875
    G1Y130.2125
    G1X65.7125
    G1Y123.7875
    G1X59.2875
    G1X58.0175Y122.5175
    G1Y131.4825
    G1X66.9825
    G1Y122.5175
    G1X58.0175
    G1X56.7475Y121.2475
    G1Y132.7525
    G1X68.2525
    G1Y121.2475
    G1X56.7475
    G1X55.4775Y119.9775
    G1Y134.0225
    G1X69.5225
    G1Y119.9775
    G1X55.4775
    G1X54.2075Y118.7075
    G1Y135.2925
    G1X70.7925
    G1Y118.7075
    G1X54.2075
    G1X52.9375Y117.4375
    G1Y136.5625
    G1X72.0625
    G1Y117.4375
    G1X52.9375
    G1X51.6675Y116.1675
    G1Y137.8325
    G1X73.3325
    G1Y116.1675
    G1X51.6675
    G1X50.3975Y114.8975
    G1Y139.1025
    G1X74.6025
    G1Y114.8975
    G1X50.3975
    G1X49.1275Y113.6275
    G1Y140.3725
    G1X75.8725
    G1Y113.6275
    G1X49.1275
    G1X47.8575Y112.3575
    G1Y141.6425
    G1X77.1425
    G1Y112.3575
    G1X47.8575
    G1X46.5875Y111.0875
    G1Y142.9125
    G1X78.4125
    G1Y111.0875
    G1X46.5875
    G0Z0.5000
    G0Z10.0000
    G0X0.0000Y0.0000
    M5
    Last edited by CnCAbc; 02-02-2019 at 12:07 AM.

  4. #14
    That code works just fine on my install of Mach3.

    Where did you buy your Mach3 License, is it in your name?
    You think that's too expensive? You're not a Model Engineer are you? :D

  5. #15
    Are the "units per" settings in the Mach3 config correct, or did someone use cm instead of mm there?
    Last edited by Neale; 02-02-2019 at 10:51 AM.

  6. The Following User Says Thank You to Neale For This Useful Post:


  7. #16
    Clive S's Avatar
    Lives in Marple Stockport, United Kingdom. Last Activity: 48 Minutes 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 3,333. Received thanks 618 times, giving thanks to others 78 times. Made a monetary donation to the upkeep of the community. Is a beta tester for Machinists Network features.
    Everything is setup to mm.
    home your machine then zero the X then in the MDI put g0x100 f500 and check if the machine moves 100mm
    Last edited by Clive S; 02-02-2019 at 04:49 PM.
    ..Clive
    The more you know, The better you know, How little you know

  8. #17
    Quote Originally Posted by magicniner View Post
    That code works just fine on my install of Mach3.

    Where did you buy your Mach3 License, is it in your name?
    Yes, the license is mine. I purchased it from a local woodworking shop.
    Last edited by CnCAbc; 02-02-2019 at 05:47 PM.

  9. #18
    Quote Originally Posted by Neale View Post
    Are the "units per" settings in the Mach3 config correct, or did someone use cm instead of mm there?
    The mach3 units per are config to mm.
    When I go under the config > select native units > there're 2 options only, inches and mm. and mine is set to mm.
    Can you set it to use a cm instead of mm? If so, how to change it back to mm?

    Thanks!
    Last edited by CnCAbc; 02-02-2019 at 05:47 PM.

  10. #19
    Quote Originally Posted by Clive S View Post
    home your machine then zero the X then in the MDI put g0x100 f500 and check if the machine moves 100mm
    If I put g0x100 f500, my machine will run out of its limits. But if I put g0x10 f500 it will move 100mm (10cm) perfectly.

    Thanks
    Last edited by CnCAbc; 02-02-2019 at 05:48 PM.

  11. #20
    Clive S's Avatar
    Lives in Marple Stockport, United Kingdom. Last Activity: 48 Minutes 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 3,333. Received thanks 618 times, giving thanks to others 78 times. Made a monetary donation to the upkeep of the community. Is a beta tester for Machinists Network features.
    If I put g0x100 f500, my machine will run out of its limits. But if I put g0x10 f500 it will move 100mm (10cm) perfectly.

    Well then I think that the steps per are wrong on the drives
    ..Clive
    The more you know, The better you know, How little you know

  12. The Following User Says Thank You to Clive S For This Useful Post:


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