LDM extruder - version 3

The 3Drag LDM extruder is an extruder for viscous fluids. Different materials can be extruded from a standard [syringe](https://www.rays.it/en/divisions/health-care/needles-and-syringes/injlight-without-needle-luer-lock-cone/). We continuously developed this extruder gaining experience from our researches with different materials. Check our [website](https://www.piulab.it) to know more about +LAB and our research.

> What's new in the third version?
+ The syringe holder is stronger and can be used to easily mount syringe from 10ml to 60ml.
+ The extruder assembly is divided into three main parts. If one component broke you can easily switch is without disassembling all the extruder.
+ The completely redesigned drive unit is stronger and smoother. The M8 screw has been substituted with a T8 lead screw.

CAD files are available on [GitHub](https://github.com/am-craft/3Drag_LDM_extruder)

This is the third version which upgrade the [second version](https://www.thingiverse.com/th