I'm trying to find the reason why my bigger printer suddenly decided to constantly create blockages as high as the PTFE tube in the cooling block (so a little bit above the heatbreak).
It's an older V6 head. The discolouring on the heating block comes from the single time the nozzle came lose and PETG was pressed through the threads upwards, that was a year ago though. I didn't change anything, from one day to another it just decided that (for both PLA and PETG) it'll now stop working properly.
Waiting on a stronger cooling fan (strongest Sunon I could find, the one with 9000rpm). Other than that I'm just confused why this suddenly happens.
I've had a hotend that constantly clogged with looked like heat creep, but it was caused by the filament being pushed laterally and twisting inside it. I imagine that made the plastic flow back.
I have also had one constantly clog due to the print cooling fan being installed wrong and blowing into the heater. This one is weird because it just unclogs when you turn the print off, leaving no evidence of what happened.