Granular HDPE Extruder Progress continued.

This is where I am currently up to with the granular HDPE extruder.

The multimeter is reading the resistance from a 10k thermistor while the barrel is warming up. You can also see the roofing insulation thats covering the nickel chromium wire at the end of the barrel.

I haven’t had a chance to get it up to temperature and try extruding just yet as there are many other little problems that need to be solved first.

I also dont think this current setup will work very well, if at all, due to the long thermal gradient over the brass pipe.

Still its a small step in the right direction. When its up and running in some usable way I will post a short description of how it went together.

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About Richard

I am a Materials Engineering working in the field of Magnetic Materials in Melbourne, Australia. This blog covers my personal interest in all things CNC.
This entry was posted in DIY Granular extruding and tagged , , . Bookmark the permalink.

2 Responses to Granular HDPE Extruder Progress continued.

  1. Your auger doesn’t have a increacing pitch in its thread like this one. Do you not think that this will be a problem?

    • Richard says:

      I can see how its very important if your extruding hollow plastic piping. However I am hoping its not the case for a solid filament. More experimentation with it will tell for sure.

      It will be a real shame if I cant get it to extrude with just the drill bit seeing as its something that’s cheap and widely available.

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