by bqLabs, published

Hand by bqLabs Oct 30, 2015
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This prosthesis has been designed to help those people with missing fingers.

It has been modelled keeping in mind the following principles:
-Keep the number of printed parts as low as possible
-Keep the assembly process as simple as possible
-Use the least possible amount of non-printable parts. The bolts and nuts in the joints have been replaced by bits of 1.75mm filament.
-Leave openings in the model to allow the hand to transpire
-Allow a higher degree of freedom in the wrist

The fingers flex when they are pulled by strings, such as fishing line, and extend automatically with the help of elastic cord.

A fabric strap with velcro is needed to secure the prosthesis to the arm.

The model is open-source, and thus can be studied and modified to improve its performance.

Author: http://www.soniaverdu.es/

Print Settings

Rafts: Doesn't Matter

Supports: Doesn't Matter

Resolution: 0.2 mm

Infill: 10%


For greater resistance: Shell thinkness(mm) 1.2


You can use tape boxer, it is cotton. Then you can add velcro where you need it.

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Hand by bqLabs is licensed under the Creative Commons - Attribution - Share Alike license.

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Printed left hand once the print was finished, I removed from print bed. As I carefully straightened the hand out, the bar connecting the hand to the gauntlet popped out of both sockets. Any suggestions on sizing the holes so that sliding on the gauntlet end and minor rotation/shifting on the hand end is possible like shown in your video? Athough I'm having this minor challenge, your design is wonderful! Thanks.

where are the videos?

Very cool! Is there anyway you could upload this as a STEP or IGS?

I do not know how to transform that file format. I am so sorry

Does the pla filament holding the joints together working out - strong/durable?
I just printed one of your masks. Simply Beautiful.

Thanks you, I am glad you like it.
Yes, I think it's very tough. But you can always replaced by a metal rebar.

Can you post .step files? I would like to experiment with the design.


Is modeled blender, I uploaded the original file : )

Always beautiful things! Just last evening I was telling a group at a Maker meeting how much you've inspired me, and now this. :-)

Thank you very much for your words!