Jump to content
Ultimaker Community of 3D Printing Experts

Cura 2.1.1 Bug - Slicing Loop


Recommended Posts

Posted · Cura 2.1.1 Bug - Slicing Loop

The .json file? Sure.

The print bed is actually 180x180 but the print head home is -40,-40. So I was trying to create a print platform 260x260 with a 40mm disallow border all around so auto-centering of objects would work. Since that caused Slicer looping, I reduced the size to 220 x 220 and just a left and front 40mm wider disallow area.

Here's the profile. I used prusa_i3.json as the template:


{   "id": "aurora_a3",   "version": 1,    "name": "Aurora A3",   "manufacturer": "JG Aurora",   "author": "Other",   "icon": "icon_ultimaker2.png",   "platform": "prusai3_platform.stl",   "file_formats": "text/x-gcode",   "inherits": "fdmprinter.json",   "machine_settings": {       "machine_heated_bed": { "default": true },       "machine_width": { "default": 220 },       "machine_height": { "default": 180 },       "machine_depth": { "default": 220 },       "machine_center_is_zero": { "default": false },       "machine_nozzle_size": { "default": 0.4 },       "material_diameter": { "default": 1.75 },       "machine_nozzle_heat_up_speed": { "default": 2.0 },       "machine_nozzle_cool_down_speed": { "default": 2.0 },       "machine_head_shape_min_x": { "default": 75 },       "machine_head_shape_min_y": { "default": 18 },       "machine_head_shape_max_x": { "default": 18 },       "machine_head_shape_max_y": { "default": 35 },       "machine_nozzle_gantry_distance": { "default": 55 },       "machine_gcode_flavor": { "default": "RepRap (Marlin/Sprinter)" },       "machine_disallowed_areas": { "default": [             [[-110.0, -110.0], [-110.0, 110.0], [ -70.0, 110.0], [  -70.0,  -110.0]],             [[-110.0,  110.0], [ 110.0, 110.0], [ 110.0,  70.0], [ -110.0,    70.0]]       ]},       "machine_start_gcode": {           "default": "G21 ;metric values\nG90 ;absolute positioning\nM82 ;set extruder to absolute mode\nM107 ;start with the fan off\nG28 X0 Y0 ;move X/Y to min endstops\nG28 Z0 ;move Z to min endstops\nG1 Z15.0 F9000 ;move the platform down 15mm\nG92 E0 ;zero the extruded length\nG1 F200 E3 ;extrude 3mm of feed stock\nG92 E0 ;zero the extruded length again\nG1 F9000\n;Put printing message on LCD screen\nM117 Printing..."       },       "machine_end_gcode": {           "default": "M104 S0 ;extruder heater off\nM140 S0 ;heated bed heater off (if you have it)\nG91 ;relative positioning\nG1 E-1 F300  ;retract the filament a bit before lifting the nozzle, to release some of the pressure\nG1 Z+0.5 E-5 X-20 Y-20 F9000 ;move Z up a bit and retract filament even more\nG28 X0 Y0 ;move X/Y to min endstops, so the head is out of the way\nM84 ;steppers off\nG90 ;absolute positioning"       }   }}


  • Link to post
    Share on other sites

    Posted · Cura 2.1.1 Bug - Slicing Loop

    Hmm, I added a machine with your machine definition as posted above, and slicing works as expected in 2.1.1 for me. Did you test with any specific model? Is the slicing-loop 100% reproducable for you? What platform (win32/win64/linux/osx) are you using?

    (Note that I did find an interesting bug where the model is being sliced even if it is in the machine_disallowed_area; I'll report that and get it fixed)

  • Link to post
    Share on other sites

    Posted (edited) · Cura 2.1.1 Bug - Slicing Loop

    Did you set the machine_width and machine_depth to 260?

    I also need to apologize. I didn't do a good job testing. I test more models and it appears to be happening to only one in particular out of 6 that I've now tried.

    It's this thing in particular that causes the looping in Cura 2.1.1 only when the machine_width and machine_depth are set to 260. It slices fine and prints great with smaller machine sizes:


    Edited by Guest
  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now

    • Our picks

      • New here? Get ahead with a free onboarding course
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 13 replies
    • Create New...