Ditan - Dual Drive Geared Spring Loaded Extruder

This is the Ditan Extruder. It's an Dual Drive (D...) Titan (...itan) clone.
It's 3:1 geared, spring loaded and dual gear driven for maximum torque and grip.
This version is only for 1.75mm filament version.

This project was inspired by the Pitan and Drakon extruder.
https://www.thingiverse.com/thing:2728600
https://www.thingiverse.com/thing:2172854
Both are really great in design and function.
I liked the sleek design and missed only one thing to make the perfect extruder
... dual d