@mpirringer said in PETG Leaves Blobs While Printing...:
@lhawes You might have some PETG on your hotend where its not supposed to be and it heats and falls off. See if you have some filament between the heatsink and block or some around where the nozzle screws in - then you have a leak inside the hotend and it will get worse. You probably will either have to do a real good cleaning and reassembly job or replace it
THANK YOU for the reply and I think I might have solved the problem with a little different approach. I checked all of the above and still had the problem. I didn't get a chance to watch each print because 'life' but it seems as though the blobs would occur early in the print, then settle down and print great later in the print.
My theory was that the bed was just a little too high and was over extruding for the bed height leaving excess material around the hot end and pushing that built up material around until it reached the point where it had to drop off. It's printing now with a slightly lower bed height and a reduced first layer down to 85% and there's no perceptible build up. Life is going to happen again not allowing me to watch the entire print but it looks very good so far.
I'll post after the print is done and report the outcome. Fingers crossed and either way I hope this might help someone else.