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Unlimbited Phoenix Hand

by Team_UnLimbited, published

Unlimbited Phoenix Hand by Team_UnLimbited Feb 24, 2017

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Summary

Updated 17/03/2017: Brought to my attention that a pin was missing. oops, sorry! Fixed.
Updated 14/03/2017: Fixed scaling error, replaced with cleaned palm.

E-Nable Phoenix hand with thermo gauntlet. Choose left or right in customizer and enter scale, all files needed will be generated and included in a single .zip file at the correct scale.

Custom Section

Please see the image below showing description of hand pins.

The image below shows the correct wiring of the tendon strings for the hand.

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I am printing this now at 25% infill. I used 5 shells for strength. Is this unnecessary? What shell count is recommended?

I'm using the openscad software to open the file to convert to .stl.

Thing is I'm only getting one part.

I cant find the other parts.
I see there is only one .scad file and when i open it I'm only seeing one part?

Any ideas on how I find the others? Thanks so much.

Hello! The Phoenix hand is a great idea, and I'm trying to learn to print them, but having some challenges. I used Customizer to create STLs for right hand, 120%. But in the Thumb element of the Fingers group, there was a triangular gap in the shape. I was able to fix this with Netfabb, which reported there were "flipped triangles".

But now I'm struggling to print without supports, parts keep coming loose even though my bed has strong adhesion. Finally spotted the cause -- at the overhanging tips of the print, they are curling UP (not sagging down as I would expect) and this snags the nozzle or the proximity sensor, knocking the part loose. Here's a photo of this -- I stopped the printer (Prusa i3 Mk2) mid-print:
http://markleavitt.com/blog/video/PhoenixHandPrintProblem.JPG

It's blurry but you can see the ends curling up. Does anyone have advice for reducing this effect? Are you all printing with or without supports? Thanks!

Update: turns out curling at overhangs is a familiar problem on the Prusa i3. I reoriented the print so the troublesome tips are along the X-axis, slowed the print speed to 70%, and got through it this time. Onward!

Hola buen día o buenas noches desde Argentina "Patagonia" consulta existe el .stl ?

Some of the makes here say they printed without supports - I find it hard to believe you can print the palm without supports.

Yes, we have printed the palm without supports, but there might be some cleanup needed on the inside/underneath of the palm afterwards.

What is the recommended infill percentage to make this the most useful in PLA? Layer height?

We use simplify 3d honeycomb infill at 25%

Hello,
I printed all the part and am now assembling. Everything fits perfectly.
Howerever all the assembly guidelines as well as YouTube video's show hands using a whippletree. That part is not created in this version.... so how do I assemble the last part of the hand using the box in these files instead?
Thanks for the help

There is no need for the over complex whippletree with this version; as it uses the three pin partial tensioner system.

How do we assemble the three pin partial tensioner system?
Thanks

Please see new image showing wiring.

Thanks for the answer. That still leaves my last question: how do I assemble the last part of the hand using the box in these files. Are there any guidelines or tutorials?

Please post on how to assemble the last part if you find out. Assembling without the whippletree. Tutorials only show with it and not with the three pin partial tensioner system. Much appreciated

I'm using the openscad software to open the file to convert to .stl. Thing is I'm only getting one part. I cant find the other parts. I see there is only one .scad file and when i open it I'm only seeing one part. Any ideas on how I find the others? Thanks so much.

You must use the Customizer to get all the parts at the correct scale and to choose left or right hand.

How do you scale this? What are the dimensions in 100% in order to scale?

Wrist to fingertip is 135mm at 100%

How can I get it in .123dx format?

This file needs to be broken into multiple files, as the individual parts are actually embedded in the one .scad file.

Again -all- parts for this hand are in the single scad file, but editting of the file needs to occur to choose which part to print.

I'm using the openscad software to open the file to convert to .stl. Thing is I'm only getting one part. I cant find the other parts. I see there is only one .scad file and when i open it I'm only seeing one part. Any ideas on how I find the others? Thanks so much.

You can also use the customizer to get all the parts out as an STL. You choose either a "right" or "left" hand and the scale you want and it will output all the STL's as a new thing. Pretty nifty!

I'm using the openscad software to open the file to convert to .stl. Thing is I'm only getting one part. I cant find the other parts. I see there is only one .scad file and when i open it I'm only seeing one part. Any ideas on how I find the others? Thanks so much.

If you insist on using the openscad file rather than customiser then you need to change which bit of the arm it's generating in the "part" variable.

part = "Palm";
part = "Fingers";
part = "Phalanx";

etc

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