Аdjustable power supply 400W 20V 20A.

1.  400W power supply for disc grinder. 

Voltage adjustment up to 20V and current adjustment up to 20A. Converted from a regular power supply. Added terminals, connectors, fan.

power supply - https://aliexpress.ru/item/1005003736871422.html?spm=a2g2w.orderdetail.0.0.23924aa62aLxZX&sku_id=12000026985155189

fan - SUNON 6015 12V. The second fan is a regular one from the unit.

Signs with symbols are two-color.

PETG plastic, Dichloromethane glue

2.  When working, sometimes you need to change the filament layer to ANYCUBIC KOBRA. To do this, I use the PauseAtHeight extension. At a given layer, the printer pauses and the filament changes. In theory, it should all happen automatically.

In reality, the script sends a pause message. it is not displayed on the display and the “continue button” does not appear. The process is hanging.

In the script, you need to comment out the line of the message output to the display. At the same time, I corrected the default variables so as not to enter them all the time.

# if display_text:

# prepend_gcode += "M117 " + display_text + "\n"

Find the text below and comment it out

# Wait till the user continues printing

# prepend_gcode += pause_command + " ; Do the actual pause\n"

and add the text

if display_text:

prepend_gcode += display_text + “\n”

instead of the word “display_text”, you can write "G4 S60"

The attachment contains the full text of the script. The filament is changed manually: first, the plastic thread must be pulled out of the extruder, cut off the damaged end, remove the tube and insert it back into place. then fill the new plastic into the extruder. I push it through to the end so that the plastic flows through the nozzle and remove the excess plastic with a brush. And a miracle!!!. then he does everything himself)))))

Text replacement in the native script is performed using Visual Studio Code.

C:\Program Files\UltiMaker Cura 5.5.0\share\cura\plugins\PostProcessingPlugin\scripts

On https://github.com I didn't post it. There are too many topics there. It seems to be off topic here too. well, let it be.

In addition, there is a FilamentChange script in the CURA slicer. It uses the M600 command, which displays a suspension message and also doesn't work for me. 

Thank you for your attention. Maybe it will be useful to someone.