Just a heads up for anyone in the U.S. who wants filament fast and cheap (ish.) I’ve had good experiences with JET filament on Amazon - if you have Prime, the 2 day free delivery combined with sub $40 price for 1kg is hard to beat. I’ve put 3 rolls of ABS 3mm through my Mendel 90 without issues (filament related at least.) - Blue, Black and Silver.
If only it wasn’t wound tightly onto a small spool! I learned with the first spool to never try and take it off the spool to undo a tangle… quite a lot of work.