After the first few prints using the supplied Cura profiles, the nozzle has started to clog up either at the start of the print or part way through. The extruder keeps going bending the PTFE tube until stopped. Has anyone have any idea of what is causing this and what are the solutions. I have ordered a Dragon Hotend. I am getting frustrated with the MIC-6 bed falling and printed off the parts for Johannes Weis's solution before I started having problems with the nozzle. I saw a YouTube video by Kersey Fabrications, which addressed this issue on a Creality Ender 5 by installing different Z axis lead screws with a finer lead(angle of the threads). Has anyone considered this solution ? As I only intend to use one hotend and there are two Z axis motors, would the installation of another stepper driver enable independent Z axis operation ie Marlin G34 operation. I realise this would involve amending Marlin, which is beyond my knowledge at the moment but may be a long term upgrade. It would help level the bed in one direction. Pulley Upgrade - although I haven't had any problems yet, they don't look that secure. The Pulleys that I purchased for the Z axis synchronisation upgrade are very similar in size to the supplied bearings and washers but with a deeper flange. They have a deeper flange than the suggested flanged bearings. Has anyone used pulleys successfully ?

I’ve slowly reached the Programming stage (it’s the first printer I have built) downloaded the .bin file onto the micro-sd card and turned the printer on. I had an error message: No Printer attached, I echo: ZZ.00. When I Ok’d this the display showed the status as BTT-SKR2 Ready (as opposed to Proforge 3 Ready in the guide) The fans came on and the LED’s lit up. I added the display software on the SD card, which seemed OK. The thermistor check seemed OK, apart from the hotend thermistor which was reading a minus figure. The end stop checks were OK apart from the filament sensor not showing. When a filament is inserted, the display still does not show the filament sensor on the endstop status. The Probe and Print fans checks were OK The Motion Checks did not work. The Z axis moved in the right direction, but moved 2x the distance ie instead of moving 10mm it moved 20mm. When the X axis is moved the carriage moved in both the X and Y directions, but half the distance in both directions ie X axis to move 10mm, it moves 5mm in the X direction and 5 in the Y direction. The same happens when the Y axis is moved. I’ve double checked the wiring and the motors are in the correct sockets. I’ve wiped the micro-sd card and reinstalled it with the same result. I hope someone can point this beginner in the right direction to get this printer working.

The wiring on the motor cables does not match the order shown in the photo’s at the motor end(ie they are Red, Black, Blue, Green). The order at the control board matches the photo’s (ie Red, Blue, Green, Black). Are wires sensitive to position in the Connector ? This is the same for the Z axis motors.