Auger feeder remix

This started as a remix to make the auger more printable by splitting it axially. The original auger is difficult because of the constant overhang and printing with support is a huge PITA.

The split model prints each side flat and is glued together afterwards (you'll need to flip the halves down on their long sides before printing). This also makes the shaft much stronger. It doesn't take much glue (superglue or epoxy) to join - the joint at the base is most important. I didn't bother gluing