talon hand tensioner by fflood

Last crawled date: 2 years, 11 months ago

This is Ivan Owen's design for the talon tensioner (you can find here: http://www.thingiverse.com/thing:232291) but I have just joined the design to the Talon base piece. I believe David Orgeman has developed an openSCAD version of this that will be more useful to people, but I thought I would upload this regardless in case someone wanted this file to test on a Tallon.
David has posted the following info and should have his files uploaded soon:
I created a parametric OpenSCAD version of this, and made one with 4 tuners the size of M3 nuts. I tapped them with M3 threads and used standard button head screws as the adjusters. I tied 0.5mm braided nylon to one of the tuners with a uni knot, and put a slip knot in the other end. I set the tuner to half way in, and then started to hang weights from it. A single printed tuner was able to hold 20 pounds suspended without breaking. After the weight was removed, the tuner continued to work fine, and appeared completely undamaged. I am shocked that these are so strong. The 20 pounds far exceeds NASA figures for normal adult finger grip strength (momentary and continuous). Given that, I guess I feel no need to look further at equivalent metal parts. I will put the SCAD file out on Thingiverse in the next couple of days in case anyone else needs a custom version. Keep in mind, the strength of these will likely be at least somewhat related to the size of the tuners and the quality of the taps. You do have to be careful when you tap them that you don't split the printed layers apart.
Thank you Ivan and David for the development of this.
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