settings new corexy speeds



  • Hello, forgive my English. I just recently finished my corexy, it has linear guides and the structure is very very firm. I'm testing speed settings with good results in general, but I don't understand much if they're well compensated and I'd like to be recommended with the features of my printer a good base setup to start, both in xzy-movements and extrusion parameters. Thank you

    my parameters

    ; set drive mapping
    M350 Z16:16 E16 I0 ; configure microstepping without interpolation
    M350 X16 Y16 I1 ; configure microstepping with interpolation
    M92 X100 Y100 Z1600:1600 E415 ; set steps per mm
    M566 X600 Y600 Z12:12 E120 ; set maximum instantaneous speed changes (mm/min)
    M203 X9000 Y9000 Z1000:1000 E1200 ; set maximum speeds (mm/min)
    M201 X1000 Y1000 Z150:150 E150 ; set accelerations (mm/s^2)
    M906 X600 Y600 Z500:500 E400 I30 ; set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    this is my corexy, direct extruder, e3dv6 with barrel bi-metal, nema 17hs4401, z screew pitch 2

    https://i.ibb.co/H2b2xML/1607939862417.jpg
    https://i.ibb.co/rvN7yMJ/1607939862430.jpg
    https://i.ibb.co/0XLsXJF/1607939862439.jpg



  • If you are mapping a second motor to the z axis, you don't need to double up everything.
    It is sufficient to have M584 Z2:4.
    M350 Z16:16 should be come M350 Z16 and so on.

    The E3D toolchanger is a good example to look at.
    It can be found here https://github.com/Duet3D/RRF-machine-config-files

    There is also the jubilee toolchanger and its configs can be found here https://github.com/machineagency/jubilee/tree/master/software/duet_config_files

    Both of the above are corexy printers with good sturdy frames



  • thanks i start testing!



  • are they good values?

    ; set drive mapping
    M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
    M92 X100 Y100 Z1600 E415 ; set steps per mm
    M566 X1000 Y1000 Z100 E1500 ; set maximum instantaneous speed changes (mm/min)
    M203 X24000 Y24000 Z900 E3600 ; set maximum speeds (mm/min)
    M201 X3000 Y3000 Z100 E150 ; set accelerations (mm/s^2)
    M906 X600 Y600 Z500 E400 I30 ; set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout



  • @Jomiag I would suggest that you redesign the XY motor mounts (and maybe Z, too) to increase rigidity. As they are, belt tension is going to cause them to flex and tilt the motors. That will increase wear on the belts/pulleys.

    Something like this (the green one) will be much more rigid:

    alt text



  • He already has braces below the motors, mirroring that upwards would be just as good, and probably faster to print as well...

    Designing and building your own printer never stops 🙂



  • [url=https://ibb.co/bLHRrdh][img]https://i.ibb.co/RPh4CHn/IMG-20201214-195406.jpg[/img][/url]
    [url=https://ibb.co/KmNNDdW][img]https://i.ibb.co/N711r5K/IMG-20201214-195416.jpg[/img][/url]

    He already has it. Thanks for the suggestion



  • The nominal voltage of my motors is 1.5A
    According to what I have been able to inform myself, the ideal is to put them at 80%, that is, 1200 but I have them in xy 600 in z with step screw 2 to 500 and in the extruder with bondtech at 400 .. It does not lose steps but. Is it bad to have them so low? It's that they make less noise like that.


  • Moderator

    80% is just the rule of thumb to ensure solid accurate movement and high acceleration without skipping steps. You can get away with lower. When it might come into play is if the nozzle contacts a curled edge, it may skip rather than push through. Or on a long print when the motors warm up they may become more prone to skip, so do some testing.


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