Just could not get this to feed thru the Bowden ( I had to try). I tried turning off retraction, 20mm feed rate, and added a couple PCs of tubing, top and bottom, no joy. It jammed everytime, within 5 mins of printing. I went thru half a spool trying to get this going. I'm sure it's good filament, but listen to the warnings on using it with bowden extruders. It doesn't work.