X axis movement in Gcode is not aligned with length of X line in drawing

Anonymous — Fri, 24 Nov 2017 09:50:35 GMT

Hello

I have made as very simple drawing (see photo - in mm)

I have then created the gcode to CAM this model. When I ran the gcode I found the X axis only was 300 mm long and not 308 mm.

I then thought I have a problem with my CNC, but when I looked in the gcode file, if found the longest move with X axis never was as long as 308 mm.

Here is the generated gcode (partly - first round) - As I calculate X will only be 301.46 mm long (X305.960-X1.500-Tool 3.000)

What is I'm during wrong ?

(1001)
(SkabTAB)
G21
G90
G92 X0.000 Y0.000 Z0.000

(2D Contour3)
G0 X6.453 Y2.400 Z16.000
G0 X6.453 Y2.400 Z16.000
G0 X6.453 Y2.400 Z6.000
G1 X6.453 Y2.400 Z5.000 F900
G1 X6.453 Y2.400 Z-1.700 F900
G1 X6.453 Y2.392 Z-1.767 F900
G1 X6.453 Y2.370 Z-1.830 F900
G1 X6.453 Y2.335 Z-1.887 F900
G1 X6.453 Y2.287 Z-1.935 F900
G1 X6.453 Y2.230 Z-1.970 F900
G1 X6.453 Y2.167 Z-1.992 F900
G1 X6.453 Y2.100 Z-2.000 F900
G1 X6.453 Y1.800 Z-2.000 F1800
G1 X6.461 Y1.733 Z-2.000 F1800
G1 X6.483 Y1.670 Z-2.000 F1800
G1 X6.519 Y1.613 Z-2.000 F1800
G1 X6.566 Y1.565 Z-2.000 F1800
G1 X6.623 Y1.530 Z-2.000 F1800
G1 X6.687 Y1.508 Z-2.000 F1800
G1 X6.753 Y1.500 Z-2.000 F1800
G1 X305.960 Y1.500 Z-2.000 F1800
G1 X304.660 Y5.625 Z-2.000 F1800
G1 X303.345 Y9.746 Z-2.000 F1800
G1 X302.014 Y13.862 Z-2.000 F1800
G1 X300.669 Y17.973 Z-2.000 F1800
G1 X299.308 Y22.079 Z-2.000 F1800
G1 X297.933 Y26.180 Z-2.000 F1800
G1 X296.543 Y30.276 Z-2.000 F1800
G1 X295.137 Y34.366 Z-2.000 F1800
G1 X293.717 Y38.452 Z-2.000 F1800
G1 X292.282 Y42.532 Z-2.000 F1800
G1 X290.832 Y46.608 Z-2.000 F1800
G1 X289.366 Y50.677 Z-2.000 F1800
G1 X287.887 Y54.742 Z-2.000 F1800
G1 X286.392 Y58.801 Z-2.000 F1800
G1 X284.882 Y62.854 Z-2.000 F1800
G1 X283.358 Y66.902 Z-2.000 F1800
G1 X281.819 Y70.945 Z-2.000 F1800
G1 X280.265 Y74.981 Z-2.000 F1800
G1 X278.696 Y79.012 Z-2.000 F1800
G1 X277.113 Y83.038 Z-2.000 F1800
G1 X275.515 Y87.057 Z-2.000 F1800
G1 X273.902 Y91.071 Z-2.000 F1800
G1 X272.275 Y95.078 Z-2.000 F1800
G1 X270.633 Y99.080 Z-2.000 F1800
G1 X268.976 Y103.076 Z-2.000 F1800
G1 X267.305 Y107.065 Z-2.000 F1800
G1 X265.619 Y111.049 Z-2.000 F1800
G1 X263.918 Y115.026 Z-2.000 F1800
G1 X262.204 Y118.997 Z-2.000 F1800
G1 X260.474 Y122.962 Z-2.000 F1800
G1 X258.730 Y126.920 Z-2.000 F1800
G1 X256.972 Y130.872 Z-2.000 F1800
G1 X255.199 Y134.817 Z-2.000 F1800
G1 X253.412 Y138.756 Z-2.000 F1800
G1 X251.610 Y142.689 Z-2.000 F1800
G1 X249.795 Y146.615 Z-2.000 F1800
G1 X247.964 Y150.534 Z-2.000 F1800
G1 X246.120 Y154.446 Z-2.000 F1800
G1 X244.261 Y158.352 Z-2.000 F1800
G1 X242.388 Y162.251 Z-2.000 F1800
G1 X240.500 Y166.143 Z-2.000 F1800
G1 X238.599 Y170.028 Z-2.000 F1800
G1 X236.683 Y173.906 Z-2.000 F1800
G1 X234.753 Y177.777 Z-2.000 F1800
G1 X232.809 Y181.641 Z-2.000 F1800
G1 X230.851 Y185.498 Z-2.000 F1800
G1 X228.879 Y189.348 Z-2.000 F1800
G1 X226.892 Y193.190 Z-2.000 F1800
G1 X224.892 Y197.025 Z-2.000 F1800
G1 X222.878 Y200.853 Z-2.000 F1800
G1 X220.849 Y204.673 Z-2.000 F1800
G1 X218.807 Y208.486 Z-2.000 F1800
G1 X216.751 Y212.292 Z-2.000 F1800
G1 X214.681 Y216.090 Z-2.000 F1800
G1 X212.597 Y219.880 Z-2.000 F1800
G1 X210.499 Y223.663 Z-2.000 F1800
G1 X208.388 Y227.438 Z-2.000 F1800
G1 X206.262 Y231.205 Z-2.000 F1800
G1 X204.123 Y234.965 Z-2.000 F1800
G1 X201.970 Y238.716 Z-2.000 F1800
G1 X199.804 Y242.460 Z-2.000 F1800
G1 X197.623 Y246.196 Z-2.000 F1800
G1 X195.430 Y249.924 Z-2.000 F1800
G1 X195.400 Y249.976 Z-2.000 F1800
G1 X193.862 Y252.818 Z-2.000 F1800
G1 X192.310 Y255.652 Z-2.000 F1800
G1 X190.744 Y258.479 Z-2.000 F1800
G1 X189.164 Y261.298 Z-2.000 F1800
G1 X187.571 Y264.110 Z-2.000 F1800
G1 X185.964 Y266.913 Z-2.000 F1800
G1 X184.343 Y269.709 Z-2.000 F1800
G1 X182.709 Y272.497 Z-2.000 F1800
G1 X181.061 Y275.277 Z-2.000 F1800
G1 X179.399 Y278.048 Z-2.000 F1800
G1 X177.724 Y280.812 Z-2.000 F1800
G1 X176.036 Y283.568 Z-2.000 F1800
G1 X174.334 Y286.315 Z-2.000 F1800
G1 X172.619 Y289.054 Z-2.000 F1800
G1 X170.891 Y291.784 Z-2.000 F1800
G1 X169.149 Y294.506 Z-2.000 F1800
G1 X167.394 Y297.220 Z-2.000 F1800
G1 X165.626 Y299.925 Z-2.000 F1800
G1 X163.845 Y302.621 Z-2.000 F1800
G1 X162.051 Y305.308 Z-2.000 F1800
G1 X160.243 Y307.987 Z-2.000 F1800
G1 X158.423 Y310.657 Z-2.000 F1800
G1 X156.590 Y313.318 Z-2.000 F1800
G1 X154.743 Y315.970 Z-2.000 F1800
G1 X152.884 Y318.614 Z-2.000 F1800
G1 X151.012 Y321.248 Z-2.000 F1800
G1 X149.127 Y323.872 Z-2.000 F1800
G1 X147.229 Y326.488 Z-2.000 F1800
G1 X145.319 Y329.094 Z-2.000 F1800
G1 X143.396 Y331.691 Z-2.000 F1800
G1 X141.460 Y334.279 Z-2.000 F1800
G1 X139.512 Y336.857 Z-2.000 F1800
G1 X137.551 Y339.426 Z-2.000 F1800
G1 X135.578 Y341.985 Z-2.000 F1800
G1 X133.592 Y344.535 Z-2.000 F1800
G1 X131.594 Y347.074 Z-2.000 F1800
G1 X129.583 Y349.604 Z-2.000 F1800
G1 X127.561 Y352.124 Z-2.000 F1800
G1 X125.525 Y354.635 Z-2.000 F1800
G1 X123.478 Y357.135 Z-2.000 F1800
G1 X121.419 Y359.625 Z-2.000 F1800
G1 X119.347 Y362.106 Z-2.000 F1800
G1 X117.264 Y364.576 Z-2.000 F1800
G1 X115.168 Y367.036 Z-2.000 F1800
G1 X113.061 Y369.486 Z-2.000 F1800
G1 X110.941 Y371.925 Z-2.000 F1800
G1 X108.810 Y374.354 Z-2.000 F1800
G1 X106.667 Y376.773 Z-2.000 F1800
G1 X104.512 Y379.181 Z-2.000 F1800
G1 X102.346 Y381.579 Z-2.000 F1800
G1 X100.168 Y383.966 Z-2.000 F1800
G1 X97.978 Y386.342 Z-2.000 F1800
G1 X95.776 Y388.708 Z-2.000 F1800
G1 X93.564 Y391.063 Z-2.000 F1800
G1 X91.339 Y393.407 Z-2.000 F1800
G1 X89.104 Y395.741 Z-2.000 F1800
G1 X86.857 Y398.063 Z-2.000 F1800
G1 X84.598 Y400.375 Z-2.000 F1800
G1 X82.329 Y402.675 Z-2.000 F1800
G1 X80.048 Y404.965 Z-2.000 F1800
G1 X77.756 Y407.243 Z-2.000 F1800
G1 X75.453 Y409.510 Z-2.000 F1800
G1 X73.140 Y411.766 Z-2.000 F1800
G1 X70.815 Y414.010 Z-2.000 F1800
G1 X68.479 Y416.243 Z-2.000 F1800
G1 X66.132 Y418.465 Z-2.000 F1800
G1 X63.775 Y420.675 Z-2.000 F1800
G1 X61.407 Y422.874 Z-2.000 F1800
G1 X59.028 Y425.061 Z-2.000 F1800
G1 X56.639 Y427.237 Z-2.000 F1800
G1 X54.239 Y429.401 Z-2.000 F1800
G1 X51.828 Y431.553 Z-2.000 F1800
G1 X49.407 Y433.694 Z-2.000 F1800
G1 X46.976 Y435.822 Z-2.000 F1800
G1 X44.534 Y437.939 Z-2.000 F1800
G1 X42.082 Y440.044 Z-2.000 F1800
G1 X39.620 Y442.137 Z-2.000 F1800
G1 X37.147 Y444.218 Z-2.000 F1800
G1 X34.665 Y446.287 Z-2.000 F1800
G1 X32.172 Y448.344 Z-2.000 F1800
G1 X29.670 Y450.388 Z-2.000 F1800
G1 X27.157 Y452.420 Z-2.000 F1800
G1 X24.635 Y454.441 Z-2.000 F1800
G1 X22.103 Y456.448 Z-2.000 F1800
G1 X19.561 Y458.444 Z-2.000 F1800
G1 X17.009 Y460.427 Z-2.000 F1800
G1 X14.448 Y462.397 Z-2.000 F1800
G1 X11.877 Y464.355 Z-2.000 F1800
G1 X9.297 Y466.301 Z-2.000 F1800
G1 X6.708 Y468.234 Z-2.000 F1800
G1 X4.108 Y470.154 Z-2.000 F1800
G1 X1.500 Y472.062 Z-2.000 F1800
G1 X1.500 Y1.500 Z-2.000 F1800
G1 X6.753 Y1.500 Z-2.000 F1800
G1 X6.820 Y1.508 Z-2.000 F1800
G1 X6.884 Y1.530 Z-2.000 F1800
G1 X6.941 Y1.565 Z-2.000 F1800
G1 X6.988 Y1.613 Z-2.000 F1800
G1 X7.024 Y1.670 Z-2.000 F1800
G1 X7.046 Y1.733 Z-2.000 F1800
G1 X7.053 Y1.800 Z-2.000 F1800
G1 X7.053 Y2.100 Z-2.000 F1800
G1 X7.053 Y2.167 Z-1.992 F1800
G1 X7.053 Y2.230 Z-1.970 F1800
G1 X7.053 Y2.287 Z-1.935 F1800
G1 X7.053 Y2.335 Z-1.887 F1800
G1 X7.053 Y2.370 Z-1.830 F1800
G1 X7.053 Y2.392 Z-1.767 F1800
G1 X7.053 Y2.400 Z-1.700 F1800
G0 X7.053 Y2.400 Z6.000
G0 X6.453 Y2.400 Z6.000

For test I have made a square 300x300mm, here was the generated gcode and the result as expected.

Thanks

/Per

Re: X axis movement in Gcode is not aligned with length of X line in drawing

LibertyMachine — Fri, 24 Nov 2017 10:50:27 GMT

Couple of questions:

1) What is the post processor that you are using, and what is the machine and control?

2) Could you share your .f3d file? To share: File > Export > Save to local folder. Return to thread and attach the .f3d file in your reply

Re: X axis movement in Gcode is not aligned with length of X line in drawing

Anonymous — Fri, 24 Nov 2017 10:57:36 GMT

Hello Seth

My machine is a : Ooznest CNC running with GRBL software as control.

Post processor is : boxy.cps (processer file is also attached)

Thanks

/Per

Re: X axis movement in Gcode is not aligned with length of X line in drawing

LibertyMachine — Fri, 24 Nov 2017 11:06:49 GMT

This is because your contour is going on the inside of the part. Clicking the arrow sends it on the outside. Fusion is intelligent enough to select the proper side of the contour when you select features on the model, so this likely happened because you selected the Sketch Profile, and not the part profile

Re: X axis movement in Gcode is not aligned with length of X line in drawing

Anonymous — Fri, 24 Nov 2017 11:24:16 GMT

Thanks, it works now.

/Per

topic Re: X axis movement in Gcode is not aligned with length of X line in drawing in Fusion Manufacture Forum

X axis movement in Gcode is not aligned with length of X line in drawing

Re: X axis movement in Gcode is not aligned with length of X line in drawing

Re: X axis movement in Gcode is not aligned with length of X line in drawing

Re: X axis movement in Gcode is not aligned with length of X line in drawing

Re: X axis movement in Gcode is not aligned with length of X line in drawing