And your certain that the filament is even hitting the hot end? Because on the build i just completed i had metal shavings creating a clog, so when i thought the filament was hitting the hot end it really wasn't.
I shined a flash-light through and found the clog that way.
Edit: i should mention i pulled off the nozzle and heater block, and the clog was in the piece that is on the inside of the heatsink.
I would also take a piece of filament, and put it to the nozzle to check if it not melting is really the problem.
-Samuel
Edited 1 time(s). Last edit at 05/16/2015 08:14PM by websuser.