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Super Bernis simple MK8 bowden extruder

by MaonTEC, published

Super Bernis simple MK8 bowden extruder by MaonTEC Oct 6, 2015
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Contents

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Thing Statistics

8428Views 1946Downloads Found in 3D Printer Extruders

Summary

Bill of material:

02 - screw M3x10mm
01 - screw M3x06mm
01 - screw M3x25mm
01 - screw M4x15mm
01 - MK8 screw driver
01 - Pneumatic tube 4mm push in fitting M6
01 - Stepper Motor Nema17
01 - Bearing 624ZZ (4 - 13 - 5 mm)
01 - Spring Height 20mm, Inner diameter 5 mm, outside diameter 7.5 and 1.2mm diameter string

Print Settings

Rafts:

Doesn't Matter

Supports:

Yes

Resolution:

0,2 mm

Infill:

20%

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Can you, perhaps modify it for 3/8" fitting? Or share the source, I'll do it myself...
Thanks!

Hi, I modified it for 3/8 "fitting, I would like you to post the photo! Thanks

Thanks. I printed it already, will post the pictures today. Few comments to the design:

  • there is a tiny filament input hole in the Lever. I had to drill it with 3mm drill to be able to fit the filament in. Is this by design?
  • there is a tiny hole in the top of the lever. I assume this is for M3/M4 screw to "secure" the spring. Am I right? (I tapped the hole with M4 tap)
  • there is unnecessary overhang in the extruder body - right above the filament output hole. This made some nasty artefacts on my cheap printer :(
  • I am missing 2 screws (M3x25 and M3x6) to finalize it - will try to buy them tomorrow if I can and will test the extruder afterwards.
    I like the design very much. I hope this will serve me well with my currently build printer. Thanks!
Feb 19, 2016 - Modified Feb 19, 2016

No, this is for 1.75mm filament!

Is this for 3mm Filament to?

Very nice that you provide that awesome feeder!

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