I did try heating the head to 220 and nothing came out. It does seem to be taking the filament in, but nothing comes out. Weird thing too, I haven’t used the right extruder in months. It was cleaned and not used. It is doing the same thing!
I experience this all of the time, it can be quite frustrating. But it is really simple to check if it’s a filament jam inside the PTFE tube or aluminum block. Simply remove the two screws holding your cooling fan in place, then separate the fan and heat sink from the mount. Loosen, but don’t take out the two screws on the top plate and slide the extruder feed motor back slightly and presto you can see right into that tube. I usually have it break off right where the tube meets the aluminum block. While you are in there I would recommend you clean them teeth out too with a small paint brush or metal pick, it will feed brilliantly after that.
it is correct that if I do not have just finished printing, the nozzle has cooled a first time, I am forced to make a Load before an unload or do a load and press the button to free the filament power and extract it.
that the fact whether the PLA or ABS. Beware of temperature changes between the two materials. In this case I adjusts the temperature to 230 ° C
Here’s a silly question: I realize that the gcode is going to change from ABS (higher temp) to PLA (lower temp) when I’m using Simplify3D for printing. But I worry that when I’m going from ABS (higher) to PLA (lower) the load/unload temperature is going to be too high for PLA loading, and too low to clear the ABS out of the nozzle. Do I load the PLA at the higher loading temperature?