Nozzle constantly plugging
Hi I’m completely brand new to printing, I got a ender 3 (not sure exact model) free from an old boss. A friend got it working for me, and I’ve made successful prints through trial and error, honestly went into this with 0 knowledge how things work. Have replaced the extruder with the metal one after an initial clog and replacing the nozzle didn’t fix the gear skipping.
I haven’t been able to find an answer through browsing that has fixed my issue yet. I’m having to get a new 0.4mm nozzle on after almost every print if I let the system cooldown. I can have the PLA heated and physically push it through but can’t get it to print. I’ve tried also pushing a needle up and changing the heat a little higher to see if I can get the plug out. I will say the filament(PLA) is in open air and unsealed since I got it.
I’d appreciate any tips regarding this as I’m brand new to printing, thank you!