FIlament jam/grind at height.

[Roxy]

I would get out a micrometer and check that the filament is uniform in thickness. I have two more than half full rolls I set aside. They would work perfect and then all of a sudden this exact thing would happen. It was too hard to push through the extruder and the hobbled bolt would chew enough material off that there was no way the filament could continue.

Over sized filament can do this very easily. A .1mm difference in size is probably enough to make this happen, but that amount will vary from machine to machine.

[dunginhawk]

I have checked and triple checked the filament.
I took things apart and the nozzle was good.
the hot end hex piece had some debris in it, i drilled that out.
on this piece here


should i be able to push a piece of filement all the way through it? i cant right now.. if i need to be able to, ill drill it out a bit more.
thanks