Tevo Little Monster - Upgraded Idler Pulley

thingiverse

The standard setup on Tevo Little Monster Pulley causes constant friction between the belts and wheels in the Carriages. Downgrading to a 16-tooth pulley on the motor provides enough clearance to avoid rubbing from above, but there aren't any M5 16-tooth Idler pulleys available, so I designed a custom solution. I chose not to use the old aluminum holders for the idler pulley because they flexed when the belts were tightened. Instead, I opted for a larger steel plate that offers more stability and support. Additionally, I added two sets of bearings to pull the belt back inside the carriage wheels and included two extra anchor points for added security. This setup also has the advantage of reducing pressure on the main idler pulley, making it less susceptible to warping when proper belt tension (around 30kg) is applied.