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3D printed Hand by Frankie Flood

by fflood, published

3D printed Hand by Frankie Flood by fflood Apr 23, 2014
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This is a remix of the cyborg beast mechanical hand palm. I had some issues early on with holes in the original mesh and the thumb stop breaking on an early version of the hand, so I decided to start from scratch and build a version that I would be able to edit easily in Rhino 3D. Rhino 3D software is in development for Mac right now, so it is a free download. I have included the rhino files complete with building stages so anyone can edit or go back and start with the original surfaces I created to build this model. I have also included parasolid and 3Ds files along with the standard stl files. I used the talon fingers and modified the proximal sections from the talon in the "stop" area that hits the palm to keep from overextending the finger. Many thanks to Jorge Zuniga for his work on the original Cyborg Beast

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I may be completely over looking it but where can i find how to out this togher

Can we get a .step version for remixing?
I have some problems with the 4 holes at the back of the palm. They are very close to the surface atm.


Thank you so much for providing these files. We have printed all the parts for this hand and are almost finished assembling it. We have found that many of the holes are difficult to pass the strings through because they are partially blocked and we have had to use a drill to clear the holes or in some cases increase the size of the holes. We printed this on a Makerbot Replicator at 150% size. Has anyone else had this issue or have any suggestions for settings to help with this for the next time we print it?

I would build a prosthetic for a guy whom has thumb and pinky, is this model suitable for that purpose?

On the finger, there is something sticking out. Is that supposed to be there?

it's a raft that is built into the model.

The raft does not remove for some reason. Is there any way that you could post the fingers without a raft? Thanks you.

Comments deleted.

I Ment to say part list to assemble it

I am almost done printing my version of the hand but I was wondering if you could provide or tell me wher I can find a part lost to actually assemble it? As always keep up the good work and happy printing

What do you mean by "a part lost"?

So, I've got it printed and all put together but the hand wont close properly. The fingers move freely without the strings. Do I have the rebound cords too tight possibly? I have to pull the strings running up to the tension block kinda hard to get it to close.

Yes, you must have the rebound cords too strong. You want them just tight enough that the fingers come back up; no more tension than necessary. I use a very light elastic for this.

what type of string are you using for the tendons? I'm about to print this next week for a guy who lost his hand over seas and would like to make it correctly

I use window shade cord for the tensioner strings and elastic bracelet cord for the tendons. http://www.michaels.com/bead-landing-elastic-cord-1mm/M10442837.html and http://www.amazon.com/Roll-Yards-Shade-Cord-Lift/dp/B0045Z56K0. If the hand is large then I go up to a larger diameter elastic like 2mm.

what are you using for the hinge to attach the fingers to the hand and the hand to the gauntlet?

I love the look & overall design. As one who works with people with hand injuries all the time, I have a few suggestions. Are you open to making a few modifications to make this work markedly better? I am working on a pc & can't seem to make the source files work for my software....

Great design! Would the materials from the e-NABLE "Cyborg Beast" Hand Materials Kit (and instructions) still work to assemble your model? At the E-Nable webiste, they recommended your gauntlet model because your designs have proven to be stronger than the original Cyborg Beast gauntlet design.

Thank you in advance.

Yes, the materials kit still works with the hand. Let me know if you have any trouble with anything else.


Hi!!! I also Printing one of this awesome project, but I have a problem with the gauntlet when i'm printing that, the machine shows me an error message and I couldnt finish my print for that.
And I have another question... what is the size of the project? , when i'm printing the parts, it has printed smaller than its look in pictures, How I could print it larger?
Can you review this part for mistakes and re upload if it's necessary please? Cheers!!!! and thank you for this.

The size is smaller intentionally so that the hand can be scaled for other size children. 100% is the baseline that the hand is set at for it's scale. Then each part of the design can then be scaled at the same percentage in your slicing program. If you are having trouble with a particular part it can be repaired in NetFab, but I have not had any trouble with any of the files this far and I have printed this many times. I will check though.

Hi Frankie, thanks for all the advice the other day. I finished the printing tonight. Pictures are up.

Cheers Sean

Awesome! Glad everything worked for you.

how are you able to print the finger files? The way they import (default axis orientation) required stout support and won't print very well. The four fingers in this remix don't print well compared to the "stock" CB fingers which print upside down, directly on the plate. I'm being frustrated severely by Makerware in that I have rotated the fingers to be upside down and "flat" (as can be) against he build plate and still the stupid slicer wont' raft under all fingers.

I would prefer individual finger files and a proper "Z-up" orientation. Are you really printing these directly as they import?

I'm looking at the 4 fingers all in one file and notice when I re-orient for the back of the fingers to be flat on the build plate, the fingers are not aligned on the same plane. I figure the rafts over the back of the fingers are there for plating with other parts yet the fingers are oriented completely wrong for printing. Anyone have any guidance here?

Never mind, I found the Talon fingers mentioned and they were all lined up and oriented for printing.

The problems are caused by a raft that is a part of the model. I will post new fingers soon that do not include the raft.

Hi guy's. I have just completed an excellent print of the current finger file. I use Simplify 3D and was able to change the orientation so the finger tip's pointed up and were printed last. Came out perfect.

I'm not familiar with posting and who or how to contact people with the ability to help me. I have had all my fingers removed because of burn then mersa, anyway I was scrolling thru cloaking at devices that might help in someway I like the look and it seems like it could help. who would I talk to about this hand as far as working for me and how to get the parts made. I have family to help assemble and of course cost is an issue. Thank you anyone that reads this and can help me Bret Millett [email protected] 435-724-1723


go to www.enablingthefuture.org for help. The e-nable community will get you a hand or a device to help you out!

you can also go to the e-nable community on google+ or facebook.

Hi Frank. Do you have a left palm? Cheers!

I just "mirror" the design for the left palm in a modeling software. Do you have that capability or do you want me to upload?

It would be great if you could download. I havent figured out the way to edit the models on Solidworks using these formats.

Hello. Great job this will really change the lives of many people. Questions. I want to print one but I have doubts assembly. What kind of wire is used for tensioning? is some elastic thread, is is common thread? Thank you very much Greetings from Argentina

I use a 1mm elastic beading cord.

thank you for the quick turn around on these. I am working off the original Beast 7.0 files but like your "pins" and the look of the different length fingers, so i will probably use yours for the little boy's hand i have to print next week.

Hi Sptifirehauser I resized all of the files, so they should work now. Let me know though if you have trouble.

Hi Frankie. i am having a problem with "sizing" for these new remixed hands. If i try to use these parts and the e-NABLE sizing guide your new version gets blown up way to much. even at 100% comparing your new left palm with the original Cyborg Beast 7.0 left palm they are much different. how can i relate sizes between the 2 version? thanks