Nozzle dragging across print at regular intervals?
Hello! Over the weekend my Mini kit arrived and while I had a blast building it, I'm starting to run into some printing problems. After building the printer, flashing the latest firmware, running the setup wizard, and dialing in the first layer, I printed the PRUSA logo included on the flash drive using the white PLA that came with the printer.
Everything seemed fine, so I moved on to a prop I needed to print for my D&D game. The white sample ran out halfway through so I switched to the included sample of Galaxy Black prusament (thank you filament sensor). A couple layers in with the new filament I noticed a rumbling sound whenever the hot end travelled across the print. Upon further inspection, the nozzle was digging into and dragging across the surface.
After stopping I tried troubleshooting. Filament seems to be flowing fine, the XYZ axis calibration detected no errors, and the first layer calibration seemed fine. I tried moving the Z axis up and down a few times to make sure it wasn't catching on anything. Satisfied, I moved on to the Benchy gcode that came with the printer. Just like the previous print, at around 4mm height the printer began to rumble and drag the printhead across the print.
I stopped it again and walked away for a minute. After checking the threaded rod, all the axes, and unloading and reloading the filament I tried one more time. Same result. This time with video!
This was as far as I wanted the print to go, but you can see the areas where the printer began to drag. Short of disassembling the Z axis, I'm not sure what else to try
edit: maybe video? how do computer?
RE: Nozzle dragging across print at regular intervals?
I think I figured it out. I loosened the screws on the trapezoidal to the point where they're *just* touching the nut, which seems to have fixed the problem