Anet A8 3D Print goes horribly wrong.
I just got a roll of PETG filament and I'm trying it out. So far a simple print went OK, but anything complex fails... spectacularly in this case. In this timelapse (captured by Octopi at 1 frame every 10 seconds, so the action is a little hard to follow unfortunately) I'm trying to print a planetary gear set (http://www.thingiverse.com/thing:1170572/#files). At about the 22 second mark one of the gears loses adhesion and gets stuck in the cooling duct. The print carries on reasonable well for a while, but at around 40 seconds things go downhill badly. At 55 seconds the duct comes off and then the head starts crashing. For some reason the head ends up below the bed level, you can see it tearing into the tape, and even burning the near edge. It also dislodged the hot end heating element which came completely out of the head. The extruder nozzle scrapes the bed, and the bed heater plug - partially melting it. The heater and temperature sensor ended up completely covered in PETG, and may need to be replaced. I've not had the Anet A8 long, and this is my first spectacular failure. I think the room was too cold (probably well below 20C), so I may need an enclosure to keep the temps up and aid adhesion.
I just got a roll of PETG filament and I'm trying it out. So far a simple print went OK, but anything complex fails... spectacularly in this case. In this timelapse (captured by Octopi at 1 frame every 10 seconds, so the action is a little hard to follow unfortunately) I'm trying to print a planetary gear set (http://www.thingiverse.com/thing:1170572/#files). At about the 22 second mark one of the gears loses adhesion and gets stuck in the cooling duct. The print carries on reasonable well for a while, but at around 40 seconds things go downhill badly. At 55 seconds the duct comes off and then the head starts crashing. For some reason the head ends up below the bed level, you can see it tearing into the tape, and even burning the near edge. It also dislodged the hot end heating element which came completely out of the head. The extruder nozzle scrapes the bed, and the bed heater plug - partially melting it. The heater and temperature sensor ended up completely covered in PETG, and may need to be replaced. I've not had the Anet A8 long, and this is my first spectacular failure. I think the room was too cold (probably well below 20C), so I may need an enclosure to keep the temps up and aid adhesion.