Flex3Drive mount + custom flexcable BMG extruder

Discussion in 'Tool heads & ToolChanger' started by Micked, Dec 30, 2019.

  1. Micked

    Micked Member

    Aug 31, 2019
    Likes Received:
    Another experiment in a lightweight direct drive extruder based on the Flex3Drive.

    I tried mounting the Flex3Drive G5 first, but I had some trouble with the filament stripping. It might be due to the fact that I ordered the SLA (got SLA and SLS confused) parts which seems to flex (pun[?] not intended) quite a bit when driven. Definitely choose SLS (or FDM) if ordering this extruder.

    c_IMG_20191222_202835.jpg c_IMG_20191223_101939.jpg c_IMG_20191223_101957.jpg c_IMG_20191223_102056.jpg

    So I threw together a custom extruder using the parts from the Flex3Drive and a BMG extruder. Luckily the module of the drive gears are the same and the BMG gear is quite thin, so it worked without any modifications.

    c_IMG_20191228_144605.jpg c_IMG_20191228_144616.jpg 2019-12-30-115402_803x724_escrotum.png

    I have it on a 0.8 mm nozzle at the moment, so it's a little bit hard to compare to the other extruders, but comparing to the bowden setup there is a slight improvement in extrusion control. Some long prints with a tricky PLA that tended to clog on the bowden setup have both finished which is quite promising as this was my main gripe with the bowden extruder.

    STLs: https://www.thingiverse.com/thing:4074957
    Onshape: https://cad.onshape.com/documents/b...86685355f8a0b3cd05/e/63b153833740f1fe4f65d233
    #1 Micked, Dec 30, 2019
    Last edited: Dec 30, 2019
  2. Rob Xaos

    Rob Xaos Member

    Dec 9, 2019
    Likes Received:
    A flexible drive BMG dual gear extruder... Very nice!

    I am very interested in your results with more conventional nozzle sizes - if you get around to testing that
    Beat likes this.

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