Developed collaboratively by some of e-NABLE’s top designers, the Raptor Hand is designed with ease of printing and assembly in mind. Features include 3D printed snap pins, a modular tensioning system, and compatibility with both velcro and leather palm enclosures. The Raptor Hand is licensed under the Creative Commons-Attribution-Share Alike license.

All files for this design can be found on Thingiverse, HERE or YouMagine, HERE. For detailed instructions on which files to download and print, see below.

You can also use e-NABLE’s web application, the Handomatic, to easily generate the STL files that are pre-scaled to the size you need.

The Raptor Hand is intended to bring together the best and most widely tested ideas from a year of crowd sourced innovation.

The objectives in designing the Raptor Hand were as follows:

  • To simplify fabrication and assembly and repair for makers and recipients alike
  • To provide a platform and reference design for future innovations, incremental and radical
  • To identify a core features set and standardized dimensions embodied in accessible 3D models with progressive licensing terms that will ensure widespread availability and future development.

e-NABLE’s prior “go to” designs included the Cyborg Beast, the Talon hand, the Ody hand and the Talon Beast. To these classics, the Raptor Hand by e-NABLE adds the following features:

  • Easier and quicker printing (no supports required)
  • Easier and quicker assembly (no Chicago Screws required, simplified cord installation)
  • An improved tensioning system (modular design, allowing for easier future development)
  • Improved documentation (coming soon)

All of the parts needed for assembly can be found easily in most areas, but if you prefer to get everything in one place, 3D Universe offers kits with all of the assembly materials needed for producing a Raptor Hand.

To obtain the materials yourself, you’ll need the following:

Part Description Supplier Order URL
Velcro (2″ wide) Amazon
Non-flexible cord Powerpro Braided Line 300 -Yard White – 80-Pound Test Amazon
Flexible cord 1.0mm Amazon
Flexible cord 2.0mm Amazon
Tippi Micro Gel Grips (size 3, clear) 3D Universe
Firm Foam Padding North Cost Medical
Tensioner screws (2×5/8in) Lowes
Tensioner screws (4×3/4in) Lowes
Tensioner screws (6×3/4in) Lowes
Tensioner screws (8×3/4in) Lowes
Palm Screw (FH PHL MS Z 4-40X3/8) Lowes
Palm Stop Nut (4-40) Lowes
Palm Screw (FH PHL MS Z 6-32X1/2) Lowes
Palm Stop Nut (6-32) Lowes


The Raptor Hand instruction manual is available here.

Assembly tutorial by Jeremy Simon of 3D Universe:

Printing instructions:

  • Scale all parts as needed (the Raptor Hand is designed to work at scales from 100% through 170%)
    • At 100%, the inside of the palm area measures 55mm
    • Measure across the widest part of the palm, then add 5mm for padding, then divide by 55 to get the scaling factor (for example, if the palm is 65mm wide, then 65 + 5 = 70, and 70 / 55 = 1.27 – so your scaling multiplier would be 1.27 or 127%)
  • Print without supports (palm and gauntlet have some supports built into the model)
  • PLA is recommended for this design
  • Suggested settings are 0.2mm layer height, 35% infill, 2 outlines
  • Refer to file names for part descriptions. The number in square brackets at the end of each file name indicates how many copies of that STL file need to be printed for a complete hand assembly.

Parts reference:

Raptor Hand Parts - Exploded View

Tying Off the Elastics

In recent revisions of the Raptor Hand, the tie-bars for tying off the elastics have been removed. The elastics should now be tied off at the wedge-shaped holes at the rear of the palm, as shown in the following picture:





By accepting any design, plan, component or assembly related to the so called “e-NABLE Hand”, I understand and agree that any such information or material furnished by any individual associated with the design team is furnished as is without representation or warranties of any kind, express or implied, and is intended to be a gift  for the sole purpose of evaluating various design iterations, ideas and modifications. I understand that such improvements are intended to benefit individuals having specific disabilities and are not intended, and shall not be used, for commercial use. I further understand and agree that any individual associated with e-NABLE organization shall not be liable for any injuries or damages resulting from the use of any of the materials related to the e-NABLE hand.

120 thoughts on “The Raptor Hand

  1. Pingback: Introducing e-NABLE’s Newest 3D Printed Hand Design – The Raptor! | E-nabling The Future

  2. Gail Gaddy Gorman Reply

    You guys are beyond AWESOME!!! What can I do to help y’all? This is becoming a passion for me and I haven’t even seen the reality of one!! But I want to be part of all this. All I have to offer is “me” (no $, no 3D printer; but I do have some “free time” and two willing hands to create, lick, stamp, fold, type, graph, etc.). PS: I’m actually located in SC not MD and we are waiting to receive a Raptor Hand for my grandson, Ty’rez Johnson (via Dr. Chi, John’s Hopkins thru Hanger Clinic.)

  3. Pingback: e-NABLE and YouMagine's Hand-O-Matic - 3D Printing Industry

  4. Armando Reply

    Hello, I am new here, and would like to know how much total cost will it take for me to purchase a hand for my mom? I only see pictures of young kids. I would like to surprise her on christmas, thank you.

      • Kyle Takeuchi

        Know this is kind of old, but it it worth mentioning that the five tiny slits on the top of the palm piece are the tie of points for the elastic. You probably have a newer model than the one in the video.

      • Jen Owen - E-NABLE

        Thank you Kyle! I will see if we can get Jeremy to redo that part of the video!!

  5. Ara Boghosian Reply

    I know that I can buy the kit, but is there information on the size and specs of the non-3D printed parts so I can buy them myself from Home Depot and other stores? Thank you, -Ara

  6. Courtney Reply

    I LOVE what this organization does and want to make some hands! I don’t have a 3D printer of my own, but Im sure there is access to one somewhere here in San Diego. I’ve never 3D printed anything. How would this work? If I just download the zip to a flash drive and take it to a printer, should the files be all set to print?

    Thank you!

    • Warm Fuzzy Revolutionist Reply

      Hi Courtney! There should be some local libraries near you or maker spaces that would let you use their machines to print a hand! If you would like to make one for an actual person on our wait list – you will need to email us at and it will take you to our volunteer form. 🙂

      Each hand needs to be sized appropriately – but we also have folks that can help you with that and send you the right file to print. 🙂

  7. Steve Palma Reply

    I have downloaded your Raptor Hand and printed it on our TAZ4 using ABS and simplify 3D, what materials are you using for this print.

  8. Courtney Reply

    Thank you! It looks like the library lets you print for free? Seems too good to be true! Going to check it out. Thank you again for the tip 🙂

    • Warm Fuzzy Revolutionist Reply

      Courtney – most libraries that have 3D printers will allow you to print but you may need to reimburse them for materials costs. But if you are matched with a child – they may be willing to be part of the donation and print it for you at no cost. 🙂

      • Courtney

        Wonderful! Im going to go in when I get some free time on Thursday and see if I can print up a prototype to test it out. Should I just take the “All Parts Right Hand” file and put it on a flash drive? Sorry so many questions, Im just really interested but have never worked in this space.

  9. Pingback: Hands Across Borders • Scout Troops Make 3D Printed Hands For Syrian Refugees | E-nabling The Future

    • Warm Fuzzy Revolutionist Reply

      Hi Andre! Many hardware stores as well as craft stores will sell the materials.
      Fishing line may be found at sporting goods stores.

      You can also order the kits from 3D Universe if you want it all sent right to you.

      • André

        I live in Brazil, and dont know laws to import things. I’ll try to found here.

      • Warm Fuzzy Revolutionist

        Hi Andre – we have some folks printing there in Brazil. Are you looking for a device to be made or wanting to get a 3D printer to help make hands? 🙂

      • ricardoalves

        Hello! I am also from Brazil and would like to ask if I may re-use this thread.

        I have a 3D printer and would also like to contribute printing parts. But sourcing the non-printable parts here (locally) would be MUCH better than importing form US – since Amazon has been making it harder to ship from US to Brazil. Long story short, Amazon is requiring us to pay taxes in advance (no problem with that) but based on “estimated tax duties” that are incorrect (e.g. asking to pay for high taxes for electronics, even when goods are under $ 50.00 and non-electronics such as the kits you suggested).

        It would be interesting to get in touch with people sourcing the non printable parts around here.
        I would ask two favors if possible…
        1) in the short term, please provide me with a local contact (in Brazil) – someone who you know is printing parts in this country – with whom I could exchange some non-printed materials ideas and
        2) in the medium term, if possible, I would suggest to create a new section in this website with links for “sourcing non-printable parts when living outside US”. Each country could have representatives to contribute to that list – and keep it up to date.

        Thanks, and congratulations for this wonderful initiative.

      • Jen Owen - E-NABLE

        Thank you!!

        That is a great idea (Section for where to source parts for various countries!) – and would love to have you go suggest that in our forum and google+ group.

        link to our forums for asking questions and also the Google+ group!

  10. Anu Reply

    Hi there, you mentioned that most people use PLA – why is that preferred over ABS?

    • Warm Fuzzy Revolutionist Reply

      PLA is corn based while ABS is filled with potentially toxic chemicals.
      Because these are being put on small children – we advise that makers use PLA because many children tend to put their fingers in their mouths and very small children may even suck on the fingers without realizing it. 🙂 Better to be safe than sorry.

  11. Pingback: Hands Across The World • Calling All Makers! | E-nabling The Future

  12. Lisa S Reply

    Our 3D printers are configured for ABS only at this time. Do you accept donations printed in larger sizes (such as the 145s) that have been printed using ABS? Thanks!

  13. selk68 Reply

    Our 3D printers are configured to print in ABS only at this time. Do you accept donations for larger sizes such as the 145 size that we would be able to print using ABS? Thanks!

  14. Pingback: Hands Across Borders • Scout Troops Make 3D Printed Hands | E-nabling The Future

  15. Randal KENT Carper Reply

    I noticed an “Raptor Optional Parts” file which I didn’t download. Is there anything in there which I should be printing for a 135 scale left hand? BTW, I’m printing in ABS (it’s all that I have at the moment). I’ll post on the doodle if I manage to get started 12/2.

  16. MacLeod Reply

    Alright, so a person i’m designing for has no wrist joint, is there some way of attaching this hand to the RIT joint in the menu to make this hand work for those without a hand at all? if so please tell me.


  17. Marie Farson Reply

    I am a teacher and both of my STEM Engineering classes would like to make a hand each, but would like to assemble them as well print them, for the experience. Can Hands Without Borders still use assembled hands even if the scouts don’t get to do the assembly? We are currently waiting to be matched with a recipient but that hasn’t happened yet.

    • Warm Fuzzy Revolutionist Reply

      Hello Marie!

      Yes! We have a lot of folks who could use them and we can send assembled hands to various locations in need.
      Have you been in contact with our matcher? I know we just got a few more requests for hands in the past few days and she might be able to find someone to make one for now!

  18. Sadaf Reply

    Hello, me and my science fair partner were looking at how to 3d print a prostethics hand like this Raptor hand- do we just download each part and it will be able to print it or do we need to use a software like Autodesk Inventor to be able to print this? Thank you

    • Warm Fuzzy Revolutionist Reply

      Hello Sadaf!

      You can download the files directly from Thingiverse and they are STL files and you can pop those right into a printer and print. If you are making one for a specific person – you may need to scale up or down depending on the size needed!

  19. alen Reply

    Would like to get help for my son hand for prosthetic 3D prosthetic call me 6193612664

  20. Pingback: Build a Prosthetic Hand – At Home! | Exotic Filaments

  21. George Reply

    Printed one of these but the snap pins don’t quite fit together properly. The pins are either too small or the holes too big. Without any dimensions to go by it is very difficult to diagnose where the problem lies. Any suggestions?

    • George Reply

      Never mind, I found a solution. I had to scale the pins up 13% in the Y and Z leaving the X (length) alone.

  22. Yiry Reply

    Hello, I am very excited to know about this. the prosthetic hand of my father was broke 4 months ago. I was looking for him something similar and then I found out this product, it’s amazing. I hope that I can make one for him for his Birthday on March. I live in Los Angeles, and I wonder if there are volunteers in my city and how can I be part of this wonderful organization. Thanks.

  23. Pingback: Scout Troops to Assemble 3D Printed Prosthetic Hands for Syrian War-Wounded Children | 3D Printing

  24. Kelvin Reply

    Hi am Kelvin i am really interested with 3D printing i have done some 3d printing designs. We can also design some teeth for who lost some
    Thank you

    • Jen Owen - E-NABLE Reply

      If you are in need of a device there or want to sign up to help – please visit our “Get Involved page” and it has all the links you need to get started!

      There is a link to the intake form for both recipients and volunteers, a link to our forums for asking questions and also the Google+ group!

  25. Pingback: 3D Print a New Hand | learning spaces + city spaces

  26. Neil Reply

    Hi Guys,
    Do you have any ideas surrounding fingers? I have 9 amputated fingers, most of them partially (75%) amputated, one fully. By the way, fantastic work you are doing!

  27. Pingback: Print your own prosthetic: 3-D printing lends a hand to affordable adaptive … – | Blogs Gerbong Artwork

  28. Pingback: Print your own prosthetic: 3-D printing lends a hand to affordable adaptive … – | Gerbong Artwork

  29. Pingback: Print your own prosthetic: 3-D printing lends a hand to affordable adaptive … – | G-Artwork Daily Inspiration

  30. Justin Kirk Reply

    First, I would like to thank you for this. This is truly amazing. I’m working on a first time build of the Raptor hand for the STEM education center where I work. I have it nearly complete but have some trouble with the fingers. I printed the parts using our default settings for the Makerbot Replicator 2 we use. They are:

    Layer Height: 0.3mm
    Infil: 10%
    Number of Shells: 2

    I’m assuming the number of shells is same as the number of outlines. The parts had to be cleaned of burr since I printed using supports. However, after some sanding and removal of the extra material, the parts fit nicely and the fingers were able to move with very low friction.

    The problem is, after attaching the flexible cords and non flexible cords, the fingers will not fully rotate and form a grasping hand when the non flexible cords are pulled. The fingers move about half way around.

    Has anyone run into this problem and is there a quick fix I can try before dissembling the hand and sanding more plastic away?

    Thank you,
    Justin Kirk

    • Jen Owen - E-NABLE Reply

      Hi Justin! Best place to ask is in our new forums or in our Google+ community where all the makers gather and can give you info!!

  31. Kyle Takeuchi Reply

    Thank you for the design! My name is Kyle and I was also born with a limb defect. I am currently studying at a college in California that has a 3d printer and have recently made this model. Unfortunately it doesn’t work too well for me due to the nature of my disability, t if there’s any way that I can get involved or help others please let me know! I can’t guarantee anything though.

  32. Kurt Rosenhagen Reply

    Is there anyway to get a copy of the assembly video that I could show to my boy scout troop? I can’t access internet at our meeting location. Also is there a video showing the hand in use by the people who would benefit from this?

  33. Fatim Reply

    Hi I am 21 and I also have the same problem with my right hand and I’ve been looking for help or something to cover and be able to use my right hand … please help or give me more information about how to get this… thank you

  34. Marc A Reply

    am ortho surgeon, i know this will make quite a difference. Please advise how i can learn more. I would very much a appreciate how to obtain the Raptor.

    • Jen Owen - E-NABLE Reply

      Hello Marc! We would love to help get you a demo hand to check out! Please email me at and I can connect you with someone that can help!

  35. Mark Castellano Reply

    I am building a Raptor Hand and am not sure what screws to use for the tensioner. I got the files from Handomatic and have an R8 measurement of 123mm.

    Mark Castellano

  36. Mary Beth Hatch Reply

    We are presenting our very first raptor hand today to a third grade student in our district. We are the Harrison Junior High EAST (environmental and spatial technologies) class in Harrison, Arkansas and we are very excited! We are in the process of printing the cyborg beast for another student in another district! I can’t say enough about this amazing company!!!!

    • Jen Owen - E-NABLE Reply

      Thank you!! If you have photos and stories to share – we would love to see them! Keep on making a difference!! Thank you!

  37. Williams School Group Reply

    I am interested in building a prosthetic with a school group,. I see the Raptor Reloaded, and this. Should we make a Raptor Reloaded, or is it OK to make a Raptor? Is this one outdated?

    • Jen Owen - E-NABLE Reply

      The Reloaded is the newest and most improved version but Raptor works too. 🙂

  38. Innocent Lindelani Reply

    hey guys, i am a medical orthotics prosthetics student in South Africa. i am asking for permition to use thia article as my assignment please, thank you very much

    • Jen Owen - E-NABLE Reply

      Of course! You can use any information from our website to help your presentation! Please let us know when it is finished – we would love to see it!

  39. Pingback: Prosthetics and 3D Printing: E-Nable | roboticsfinder

  40. Wayne Hosfield Reply

    I am a bi-lateral transmetatarsal amputee and am currently fitted with toe filler type inserts inside shoes fitted with ankle-foot orthotics. The degree of difficulty in walking longer distances is great due to the change in gait and the stress placed on my back. Has anyone in your organization looked into creating any type of 3D printed orthotic for amputees with under these conditions? If so, I would greatly appreciate any information on this subject. Thank you.

    • Jen Owen - E-NABLE Reply

      Hi Wayne! We are not currently working on anything but hands and arms but hope that in the future we are able to branch into other areas to use 3D printing to make a difference!

  41. Pingback: Washington HS students building prosthetic hand for use in real life | News Blog

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  43. Pingback: Scout Troops to Assemble 3D Printed Prosthetic Hands for Syrian War-Wounded Children | 3D Printer Technology

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