Tevo Little Monster - Upgraded Idler Pulley

The standard setup on Tevo Little Monster Pulley setup means the belts rub constantly against the wheels in the Carriages. Dropping to a 16 tooth pulley on the motor gives enough clearance not to rub from the top but there isn't any M5 16 tooth Idler pulleys so I had to design a solution.

I decided not to bother with the old aluminium holders for the idler pulley as I noticed it flexed when the belts were pulled tight so I decide to use a larger steel plate instead. I have added 2 sets of bearings to pull the belt back inside the carriage wheels and also add 2 additional anchor points. It also has the added benefit of reducing the amount of pressure on the main idler pulley preventing it being warped over when you add the correct belt tension (around 30kg)