This might be one of the most futuristic looking gear mechanisms you’ve seen on Thingiverse. User otvinta3d released a great model demonstrating the Eccentrically Cycloidal Drive Model by EC gears. It’s a drive gear mechanism with a gear ratio of 1:9 in a very compact design. Achieving such a ratio with conventional gears, in the same compact body is very difficult. 

We 3D printed this model with colorFabb nGen and at 0.08mm layerheight the gears run very smooth. This model contains only a few parts parts and is easy to print and easy to assemble.

Until the end of the year you can benefit from the Buy 4, Pay 3 promotion! Use coupon code colorfabb4you on our website to get the fourth spool you order for free! Some conditions apply though: cheapest spool is for free and samples and PLA Economy are exempt from this part of the promotion.