D3D Fusion printer design: Difference between revisions

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= Problems that a 3D printer solves =
#REDIRECT [[D3D Printer Design]]
== Positioning in 3D space ==
== Feeding plastic ==
=== Pellets ===
 
=== Filament ===
''' Direct extrusion '''
Used by most early RepRaps. Drawback is that Extruder motor is heavy (do we don't want to move it along with hot end). Some effort has been put into combining direct extrusion with fixed E-motor and a sliding hobbed bolt[http://garyhodgson.com/reprap/2012/01/experimental-off-carriage-extruder-motor/]. There's also the Flexible Drive Shaft Extruder[http://mutley3d.com/Flex3Drive/] which has been reported to work well.
 
 
''' Bowden extrusion '''
This is the most common way to extrude filament. Extruder motor is fixed and filament is pushed from extruder motor to hot end through a PTFE tube. Introduces more delay and tension complications than either of the direct extrusion solutions.
 
= Ideas =
 
== Making it modular ==
 
Much like Alexander Stepanenko has done for CNCs here:
 
<html><iframe width="560" height="315" src="https://www.youtube.com/embed/wkk4zv96Dvo" frameborder="0" allowfullscreen></iframe></html>
 
This would allow extending to a multi purpose machine at a later stage. Examples of existing multi purpose machines are Diyouware[http://www.diyouware.com/] and Fabtotum Fabricator[http://fabtotum.com/about].
 
 
== CoreXZ ==
 
This means driving the X/Z directions by rotating two motors in same/opposite directions. The idea has been tested with good results[http://forums.reprap.org/read.php?2,377858].
 
The big win with this configuration is saving one motor (compare to current common designs that uses 2 motors for Z axis) and much easier build (thread and bearings replace threaded rod with nut).
 
== CoreXYZ ==
 
There's nothing hindering us from also driving a Y axis with lines, like shown here:
 
<html><iframe width="560" height="315" src="https://www.youtube.com/embed/ceBZMyg3n3M" frameborder="0" allowfullscreen></iframe></html>
 
Again, saving in a Y-axis belt and motor makes it an easier build. Using v-groove bearings and dynema line for driving all axes also takes down the unique part count really low.

Latest revision as of 23:41, 7 January 2016

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