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Skull handle

Pull cord handle to start engines

For your home

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    Replacement handle for a petrol lawnmower or any engine with a pull cord to start.

    WARNING: Pull starting engines can be dangerous. There is a risk that the handle can be pulled out of your hand so fast that it breaks bones. Always read the instructions. Do not use this replacement unless you are confident that you know how to use the equipment you are attaching it to. You use this entirely at your own risk.

    Updated: May 2016, August 2016, April 2017 and June 2017. The earlier versions were not strong enough so I have progressively thickened up a couple of areas and made the overall design a bit larger. The latest design has survived several months and not yet broken.

    Materials and methods

    Printer settings:
    Ultimaker 2+
    Filament = 14m
    Layer thickness = 0.15mm with 0.4mm nozzle
    In fill = 100% solid (for strength but there are modelled in hollow sections where acceptable)
    Speed = 40mm/s
    Support = everywhere (there is also an additional support modelled in, that supports the generated supports!)
    Adhesion = Raft

    I have used the following filament types.
    ColorFabb PLA/PHA at 215C/60C
    Rigid.Ink PLA Plus at 225C/60C
    Real Filament PETG at 240C/80C

    The PETG is the strongest but the latest version has survived in the PLA derivatives.

    Parts of the model have been derived from others. With kind thanks to the authors of the following:
    Skull - http://www.thingiverse.com/thing:179795
    Other Bones - http://www.thingiverse.com/thing:157696



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      0a82aa8cf879e284ffe4b5e04ad6461c?default=blank&size=40jbruni75 added this to the Favorites collection ago
      B688dcac9f6f89e36a749dcc81c2e1d5?default=blank&size=40TwentyThreeMillimeterHole added this to the Random collection ago
      E3cbc7a62fa769ba80c6fd36274fd9aa?default=blank&size=40dreamland added this to the skull collection ago
      Mini jcb tooey2016 10v650x650John commented ago

      I have yet again updated the design to be a bit stronger.

      Mini jcb tooey2016 10v650x650John commented ago

      Glad you like it. I have just this second uploaded another strengthened version. Slightly larger and bulked out in places where I think it needs it. I would recommend trying version 048 if you have not already printed the older version.

      Mini thumbnail img 0023 1 DeathMachine commented ago

      Ha! Love it! Soon it will be on my rototiller .

      Mini thumbnail img 0023 1 DeathMachine added this to the Things I want to print collection ago
      6dff6a0ab910b4c984a7689029bd03bc?default=blank&size=40Jake Smith added this to the Interesting collection ago
      Mini jcb tooey2016 10v650x650John published this design ago