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Download gcode files using this link: https://github.com/gregsaun/bear_extrude...
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Copy the following files to your SD card
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bear_hemera_config_mk*.gcode
(choose the version corresponding to your printer) -
unload_filament_hemera.gcode
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Insert the SD card in your printer with the Bear Hemera
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In the menu of your printer select "Print from SD" and choose the file
bear_hemera_config_mk*.gcode
.
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From the printer's menu, disable the fan check with the menu Settings -> Fans check - On / Off
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From the printer's menu, disable the filament sensor with the menu Settings -> Filament sensor - On / Off
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From the printer's menu, run the PID calibration for your hotend with the menu Calibration -> PID calibration.
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Raise the X axis to more than 30mm by pressing the LCD knob for longer than 3 seconds. Turn the knob to move up
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Place a metallic object underneath the Pinda probe. The red light on the probe should turn off
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From the printer's menu Settings -> Temperature -> Nozzle, set the nozzle temperature to 80°C
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Return to the info screen (main screen)
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Verify that the hotend fan is starting as soon as the temperature exceeds 50°C
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Let the hotend cool down using the printer's menu Preheat -> Cooldown
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From the printer's menu Settings -> Temperature -> Fan speed, set the fan speed to 130.
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The nozzle fan (front fan) should now rotate at half speed.
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Open PrusaSlicer, go to Printer Settings -> General -> Size and coordinates, then click on the Set ... button
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On the Bed Shape window, set the X size to 240
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And Y size to 205
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In PrusaSlicer, go to Printer Settings -> Extruder 1 and reduce the retraction length to 0.5mm for PETG and 0.3mm for PLA
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Bed calibration fails because of the geometry of the extruder. The Pinda and the nozzle have different positions.
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The self test will fail because of the E3D fan which does not have the rotation sensor. It will also fail because of the bed calibration.
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Calibrate your first layer with the printer's menu Calibration -> First layer calibration.
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Congratulations, you have finished to install and calibrate your BearMera extruder.
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Happy printing :)
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3 Comments
Apologies if I'm missing a step here but running the MK2 with the provided bear_hemera_config_mk*.gcode and I am unable to perform the mesh bed leveling. The config file appears to create an offset that pushes the PINDA probe too far right on the X axis. Am I missing something? Thanks - Joey A.
Hi,
Thanks for the design, it looks great! There are some aspects that concern me.
-Is the printer able to find the 9 points needed for the auto bed mesh leveling?
-Is it possible to do XYZ calibration?
Thank you for your answer!
Is the printer able to find the 9 points needed for the auto bed mesh leveling?
Mesh bed leveling is working fine.
Is it possible to do XYZ calibration?
No this is not possible due to the different Pinda position. Some points cannot be mechanically reached.