reprap-granule-extruder-tudelft1

7 | Recommendations for further development
transitional instead of four. The drawback of this
system is that it can be very difficult to meet the
tolerances required to use the friction screw extruder.
A solution can be to use a transportation screw and
melt the material by only using a heating element.
Technically it would be more ideal to make an
external wire extruder. The parts can made bigger,
stiffer and stronger. It is strongly advised to conduct
an energy benchmark between the extruder designed
in this research and an external wire extruder in
combination wit the RepRap.
Look at control software
One could also look at how the software that controls
temperature and extrusion speed could be
programmed. At first, one could think this is the same
principle as the current software for the
Thermoplastic extruder, but under a closer look,
potential problems arise. Because the amount of
granule in the funnel changes, the gravitational force
with which the granule presses itself in the screw
changes. Also, difference in the size of pieces of
granule can cause a change in entrance speed.
Because of this, the extrusion flow is probably not
constant. One can look at possible ways to detect this
and change settings trough software to make the
extrusion stream more equal.
28 | Prototyping Lab (IO3028) - RepRap Recycle Add-on