Thingiverse
Pellet Extruder with Auger + Moineau screws by carlofonda
by Thingiverse
Last crawled date: 4 years, 2 months ago
v0.8, Monday 22 August 2016.
UPDATE, 31 Oct 2016: a new improved version has been published as: http://www.thingiverse.com/thing:1861347
This is a very first attempt to design a (full-parametric, customizable) prototype extruder for plastic pellets that can work for common 3D printers. The real extruder should be obviously printed out of metal (stainless steel, probably) at a smaller scale and many parts will have to be added/improved (for example: the head should be able to accept "standard" screw-in nozzles; the axis should be coupled with a stepper motor, possibly with a geared reduction; a controlled heating system should be applied around the stator for melting the pellets; different types of flange should be added for connecting the extruder to common 3D printers; etc...). Anyway, this prototype can already be printed in plastic and it may be hopefully good for some preliminary tests with "soft" pellets (chocolate granules? Play-Doo???), extruding "by hand" and without a heating system. We still haven't tested it, really... But we plan to do it soon, and to post here the results and an improved version of the design.
UPDATE, 31 Oct 2016: a new improved version has been published as: http://www.thingiverse.com/thing:1861347
This is a very first attempt to design a (full-parametric, customizable) prototype extruder for plastic pellets that can work for common 3D printers. The real extruder should be obviously printed out of metal (stainless steel, probably) at a smaller scale and many parts will have to be added/improved (for example: the head should be able to accept "standard" screw-in nozzles; the axis should be coupled with a stepper motor, possibly with a geared reduction; a controlled heating system should be applied around the stator for melting the pellets; different types of flange should be added for connecting the extruder to common 3D printers; etc...). Anyway, this prototype can already be printed in plastic and it may be hopefully good for some preliminary tests with "soft" pellets (chocolate granules? Play-Doo???), extruding "by hand" and without a heating system. We still haven't tested it, really... But we plan to do it soon, and to post here the results and an improved version of the design.