Zulfe,

I don't know which filament you are using, but Makerfarm had a bad batch of 3mm too. It might be that one is following the other as a problem. I had trouble with it and a discussion or two with Colin about it. I believe that he fixed the supply issue and he did offer me a refund.

I am going to be adding a second printer soon and the next one is planned with the E3Dv6 and 1.75mm Bulldog. I have the extruder and Bulldog and am working on the mount before I order the printer. I probably will start putting it together in November. This one is going to be a slow build using some of the ideas I have collected from this great group here. Then, if that works well, I may go back and overhaul/change the 3mm Makerfarm with some of those same ideas.