3D printer home-made extruder

There are two type of extruder:

- Direct drive

- Reduction gear

With a direct drive, the electronic isn't able to provide the current. And with a reduction gear system, the backlash generates lots of printing issues.

I have decided to develop a third type, a pulley-belt one with a E3D v6 hotend and a MK8 drive gear. 

Engineering school project - Harpon Rocket

In a small group of student, I designed a rocket with a special landing system. An electric DC motor drives the landing system.

Manfactured product

CNC milling machine

A huge project with few time for designing and manufacturing and of course, with a very tight budget. All axis were salvaged , the work has been to design all the junctions.

First chips

Z axis

X-Y axis

The breakout-stepper control board. There was no cooling, I had to add one. 

The spindle motor

The box, in order to avoid chips going everywhere.

The junctions manufactured with another CNC milling machine,

The assembling,

The spindle motor with its mounting bracket,

A home-made system in order to have an easier maintenance

Video pole

An amelioration of a mechanical video pole. The main target is to control wirelessly the camera on pan/tilt directions.

In the 1st release, some problems have been outlined:
- Important holding torque needed => Important electrical consumption
- Not enough stiffness

Critical part simulation :

A 2nd release, lighter, without holding torque needed in static position,

Electronic principle,

UPDATE : The architecture has been modified: