I have a CTC Formaker 4 in 1 3D Printer. It has worked great for a long while but now it is messing up. It will print fine for awhile and then the filament will stop coming out but the printer keeps moving like it thinks it is still printing. If I clear the print job and start over, it again prints fine at first but then I get the same end results. Please help me fix this problem. I have not been able to find a solution on Google. Also I am using the latest version of MatterControl.
This sounds like a clogged nozzle. Try driving the filament into the hot end manually to verify that the plastic is flowing correctly. If there is a clog or other impediment in the nozzle, the filament will become curly as it is exiting the nozzle. A clear nozzle will always result in the filament extruding as one straight piece.