I just got my printer too but it only seems to work with filament for a 7Tech 3d pen,but it comes out too fast and will not stick to the print bed. It was printing out nice with this same filament this afternoon but the it suddenly was not sticking and I had to stop it. I have a big roll of Monoprice ABS 1.75 mm filament but the printer will not work with it. This is really frustrating,I want to print!