Lets summ the PastEtruder up...
Starting with the poster from presentation:
Tell a little bit more about it:
The PastEtruder is an extruder for heated or non-heated pasty materials, for example chocolate, marzipan, clay, ceramics...
It consists of two extruder stages: a heated syringe that is pressed down by a dc-motor. So you don´t need compressed air and the material flow is more constant.
The material is feeded via a small hose into a second extruder. This ones extrudes with a trapeziodal screw, driven by a stepper-motor. The second extruder is heated too.
By using a screw-extruder you can define the material-flow very exact. Furthermore the material-flow is zero as soon as the stepper-motor stops.
Both extruders are controlled by a on-board-controller, that cares over both heaters and both motors. You can setup everything by four buttons and a 16x2 display.
While the system runs you can monitor the temperatures and the motor-current on the display.
Inside the controller runs an open-source software that can be addept completely to your demands.
The whole project is published unter the creative-commons license: