Double geared filament drive for Nema 17

My previous experimental filament drive didn't turn out to work as expected, so I needed a double geared drive. Other drives of this type wouldn't fit on my printer, so I created my own.

The idea is that one gear drives the other. They can then, in effect, drive the filament down together from two sides. Look at the STL and you'll get it. This thing was designed for weak or flexible filament types.

Mine is still printing, I'll let you know.

Have fun.