RE: unable to resolve underextrusion
Out of ideas. Only thing I can think of is the heat break temperature is under-reporting due to a faulty thermistor. Example, it's says it's 35 but it's really 50.
RE: unable to resolve underextrusion
Out of ideas. Only thing I can think of is the heat break temperature is under-reporting due to a faulty thermistor. Example, it's says it's 35 but it's really 50.
So 35 to 40°C would be okay for the heatbreak temp, but 50° would be too much? Unfortunately I have no clue what values would be considered normal...
RE: unable to resolve underextrusion
So 35 to 40°C would be okay for the heatbreak temp, but 50° would be too much? Unfortunately I have no clue what values would be considered normal...
Above 50° PLA will start to soften. What I'm suggesting is maybe the heat break temperature is higher than what is being reported. Just a guess really.
@conrad-2 suggested you test the effort required to *pull* filament through the ptfe tube but you only reported pushing ... this is a test for internal damage/wear of the tube (usually due to extended use of abrasive filament but there can be other causes) - please complete this test.
You definitely have a cooling air flow problem - this *might* have permitted heat creep or perhaps it is a consequence of multiple repair attempts and not the original issue - if the fans are OK then check the shroud and the air flow path.
Cheerio,