Unresolved why is the filament breaking?

for some reason if I leave the filament in my r1+ for more than a few days it will break about 2 or 3 inches above the extruder. the settings are standard (50C for the print bed and 210C for the nozzle if memory serves), I have only used pla in it, it happens with any brand of filament I have tried, it might be because the attic I have it in has terrible heating and cooling, that would explain it snapping at the point it curves, that is pure speculation though. I am using an old version of matter control because I hate the new ui, as for the files, I made them in tinkercad. the thing is fully stock, I have had to take off the thing that holds the filament in place because of it clogging when the filament snaps.

 

Humidity is a factor in aging of filament, in my opinion. I experience breaking between the spool and the extruder on my printers as well and have developed the habit to remove the filament if it's going to be more than a day or so between prints. This is in an air-conditioned house with temperatures no higher than 84°F and humidity in the 55% range or lower.

 

I am not sure of the humidity in the attic, but it probably does get above 84F in the summer, right now there isn't much I can do about it because I don't have any other place to put it. it's only the bit between the spool and the extruder that breaks, the rest of the spool is fine, I have left it there for months and it wasn't breaking much more than normal.

 

the filament on the spool doesn't break when I bend it.