Before I finished building my printer I was lucky that I had been given a spool a filament from a friend and had no use for the samples.

A while a go I saw the white sample and thought it would be great to print a space shuttle with so I set it up and about an hour into the print it knotted and jammed.

The fact that the filament was not on a spool was certainly the cause of the filament knotting. I had already tried to put it on an empty spool but it wasn't having any of it.



Since then my printer has been consistently blocking about 20/30 mins into a print. If I remove the filament the feeder will still extrude normally so I am thinking its the hot end.

No amount of playing with the bed has made any difference as after days of fiddling I can only get back to where I was after the filament knotted.

I am now at the stage where I need to take the feeder and hot end apart to inspect and clean.

So if you are trying to use the sample filament I would suggest you sit with it and give it a hand feeding as it's bound to knot up and block otherwise.

On the bright side I am getting good at making micro adjustments to the bed and have learned a lot about configuring the printer.