New Idler Shaft- Gear Box

thingiverse

This is an improvement to the idler shaft inside the gearbox. The previous shaft was 4.6mm in diameter to fit in a 4.7 blind hole. Although the bearings on the idler gear is 5mm which causes slop and eventually broke the shaft. This design fits in the 4.7mm blind hole and increases diameter in the middle to 5mm to fit the bearings. The other thing to consider is printing this horizontally to make it stronger so the stress doesn't effect the sliced layers.