by olawlor, published
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This is a 3D printer extruder for extracting sand, dust, or other granular material from a hopper, and sending it down a Bowden tube under software control. See the OpenSCAD for material details; in particular the steel auger bit needs some modification to fit the stepper in the version.
My blog post giving a bit more background:
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Sandstruder by olawlor is licensed under the Creative Commons - Public Domain Dedication license.
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- Remixing or Changing this Thing is allowed.
- Commercial use is allowed.
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