Can't find the reason for drop of quality
Hello,
I bought a prusa mini about two years ago, it worked really well, and I stopped using it for maybe a year. I recently printed something and the quality is terrible...
I'm trying to understand what is the issue. I changed the nozzle, calibrated it, and printed some things I printed 2 years ago. see image bellow (Left is printed two years ago, Right is printed this week.
I am going to buy new filament to see if that could be the problem but appart from that what could be the issue? 
RE: Can't find the reason for drop of quality
If this is old filament that has not been kept in a dry environment then that may be the problem.
Tom
RE: Can't find the reason for drop of quality
So I bought new filament and had the same result, but tried different settings, to see what could be wrong and lowering the temperature improved a lot the result.
However the underneath of the slot remains a problem on all the tests, it makes some sort of buldges... Any idea what could be the reason?