This is a remix of tim_sweden's filament feeder for the 2016 edition of the FlashForge Creator Pro. It offsets the filament guide tubes so the filament unwinds more uniformly from the spools.
This remix has holes to reduce the amount of material needed for printing it, and also has tapered holes for easier insertion of the tubes and filament.
Another change is that I have provided an additional ‘withStops’ variation, which has an extra plug at the underside. This has two advantages: first, it is even easier to insert filament because of the conical hole, and second, the plug prevents the guide tubes from going all the way through the holes. This can help if you have nasty poorly wrapped filament spools that are tangled to such a degree that the extruders pull hard on the filament, and pull the tubes downwards. If that happens, the risk that the filament gets completely tangled increases.
I recommend mounting the feeder in the topmost clamps, especially if you use filament filters like on the photo. The more room the filament has to unwrap from the spools, the lower the risk of it getting tangled up.
(The filament filters shown in the photo are thing 492067)
Update 2016/10/02: I added a ‘v2’ model which has slightly thinner mounting rods and should be easier to mount into the clamps without risk of breaking. You should try this v2 model first, unless you know your printer has a habit of printing things slightly thinner than they should be, or you are printing in ABS that shrinks a lot.
Update 2017/02/12: Added the “withStops” versions. These also have the FlashForge logo the right side up :)
I recommend to print this with 3 perimeters to ensure the mounting rods are strong enough.
A brim is highly recommended to avoid trouble with the small first layer contact surface of the holes.