Welcome! Log In Create A New Profile

Micro Extruder (28byj48, 63g)

Posted by lhartmann

Forum List Message List New Topic

lhartmann

Micro Extruder (28byj48, 63g)
November 02, 2016 11:11PM

Registered: 8 years ago
Posts: 91

Just finished a micro extruder design and print, and wanted to share it with you. Features:

Quick release.
Bowden tube out, guide tube in.
Lightweight: 63g
Compact: About size as a NEMA17 motor.
Modified (bipolar) 28BYJ48.
Tested with TPU and ~500 load pull.

I wanted to print flexibles on my diamond hotend, so I needed a very short tube and a lightweight feeder. Couldn't find one, created one. :-)

[www.thingiverse.com]

4661131c0670dd9347521d5e30d71aac_preview_featured.jpg

ed8b588a13b555d2c541cd84f3bc4af4_preview_featured.jpg

e4cae1018a58a0e1254a3e72918c4924_preview_featured.jpg

Reply Quote

the_digital_dentist

Re: Micro Extruder (28byj48, 63g)
November 02, 2016 11:48PM

Registered: 11 years ago
Posts: 5,780

Does it work?

Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]

Reply Quote

o_lampe

Re: Micro Extruder (28byj48, 63g)
November 03, 2016 03:50AM

Registered: 8 years ago
Posts: 5,232

Fast retraction might become a problem with this stepper, but TPU and other flexible filaments work fine without.
From my experience the stepper runs hot very fast, I'd add a fan.

The housing acts as support for the drive gear. Do you see any wobble? Would it be possible to add a bearing?