Python Utility Hand. For Printed Accessory Mounts

A new take on a prosthetic hand design.Designed with a picatinny rail system, instead of fingers, to print attachments and mounts for anything needed.


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This is my first design attempt at a utility, alternative, prosthetic device.

Built in Tinkercad.

I used the common picatinny rail concept, to make a mountable, "swiss army" type device.

I figure, with standard prosthetic hands, sometimes fingers can get in the way.
Or, If you need to paint a house, or want to go camping etc.. no need to get your good hand all dirty, that kind of thing.

There has been a lot of talk about holding specific trade items, a chef's knife, a paint brush, a guitar pick,  etc... Or items for kids, like toothbrush/spoon holder, marker/pencil, Playing card holder, Nerf gun, Violin bow...

There are countless ideas for attachments

The Flat area on top of the wrist, Is for either sticky back magnet strips, or Velcro, depending on the need. More lego dots could go there as well.

Any dedicated item can be attached by printing a fitted rail bracket to match.

I have added a few to start;

-Card Holder

-Cup Holder

-Lego rail

-even a slingshot ;)

I would love to see what others will come up with too!

I included blank palms and rail/mount parts, so others can add those to other attachments.

It's recommended to scale a blank palm to size first, before adding the rails in a program like Tinkercad. Best if rails, and mounts stay at 100%, or at least be sure to scale the attachments accordingly.

This started out as files from both the e-Nable Raptor palm, and the Flexy hand 2 wrist.


Materials and methods

-Velcro straps
-1/4" screw for attaching Velcro to Palm


  • Span1
    Basic Palm
    STL  β€“  230 kb
    Updated on 01-04-2016  β€“  6:30 h  β€“  39 g  β€“  99×107×35 mm
  • Span1
    Blank Python 4 Scaling
    STL  β€“  270 kb
    Updated on 01-04-2016  β€“  4:05 h  β€“  24 g  β€“  82×95×35 mm
  • Span1
    Blank Rail Mount
    STL  β€“  17 kb
    Updated on 01-04-2016  β€“  0:57 h  β€“  6 g  β€“  29×72×9 mm
  • Span1
    Cup Holder Test
    STL  β€“  490 kb
    Updated on 01-04-2016  β€“  3:49 h  β€“  22 g  β€“  78×84×83 mm
  • Span1
    Final Rail Lego
    STL  β€“  110 kb
    Updated on 01-04-2016  β€“  1:10 h  β€“  7 g  β€“  29×72×12 mm
  • Span1
    Hinge Pins N Caps
    STL  β€“  170 kb
    Updated on 01-04-2016  β€“  0:29 h  β€“  3 g  β€“  41×29×7 mm
  • Span1
    Picatinny Rail
    STL  β€“  32 kb
    Updated on 01-04-2016  β€“  0:45 h  β€“  5 g  β€“  65×21×9 mm
  • Span1
    Playing Card Holder
    STL  β€“  360 kb
    Updated on 01-04-2016  β€“  6:25 h  β€“  36 g  β€“  140×15×82 mm
  • Span1
    STL  β€“  300 kb
    Updated on 01-04-2016  β€“  5:55 h  β€“  35 g  β€“  99×104×35 mm
  • Span1
    Python Full Plate
    STL  β€“  770 kb
    Updated on 01-04-2016  β€“  9:19 h  β€“  55 g  β€“  177×104×39 mm
  • Span1
    Python Wrist
    STL  β€“  310 kb
    Updated on 01-04-2016  β€“  2:49 h  β€“  17 g  β€“  92×71×39 mm
  • Span1
    S Shot Mount
    STL  β€“  190 kb
    Updated on 01-04-2016  β€“  4:57 h  β€“  33 g  β€“  129×106×22 mm


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F245b488a2a36708524ac56a5b75298d?default=blank&size=40Luca Cisco Enei added this to the ausili collection ago
0b28b9f43db35622fa1669e7969b8c0e?default=blank&size=40qubick added this to the Prosthetics collection ago
9f8752bc52e505ee4a854f9eb6a0f371?default=blank&size=40pl3x added this to the cool collection ago
Mini 3d robot hand and buterfly wallpaper hd wallpaperAxisLab published this design ago