Topic: Grinding noise when extruding
I don't know if this is due to improper assembly or a defective part or if this is just expected, but I am still not getting nearly the extrusion rate that I thought I should be getting. At 180C, I am getting about 4 inches per minute. My temp is pretty stable for the most part.
The thing that bothers me and that I believe is related is that about 50% of the time, I get a loud noise from the extruder for no reason that I can determine. It is unrelated to temp (if I turn my temp to 190, the grinding is still present).
I am attaching a video that catches the difference in sound. The short video starts out with normal, expected noise and then a little more than 1/2 way through, you can hear the loud grinding noise kick in. I am using my camera phone, so please forgive the fact that it is upside down.... but all I was trying to do in capturing video was to show that the noise doesn't seem to be related to the temperature (as far as I can tell).
Any advise would be appreciated. I have an unverifiable suspicion that the cause of this intermittent grinding is the same as my unreliable diameter... but until I know if this is normal/abnormal noise (and if abnormal, the solution), I can't really proceed on resolving the diameter issue.
Thanks