e-Nable Device Sizing Blender file

by profbink, published

e-Nable Device Sizing Blender file by profbink Nov 26, 2014


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This .blend file is designed to assist people in properly fitting 3d-printed prosthetic devices to clients based on photos.

This work is for you. Please comment if there's anything you need, like models you'd like me to add and set up.

This file includes the following models: (from left to right)
The Cyborg Beast
The Talon Hand 3.0
The Ody Hand 2.0
The Raptor Hand
The Raptor Reloaded
The Osprey Hand
The Flexy Hand 2
The Phoenix Hand
The K-1 Hand

Models for 30x30 centimeter grids and 12x12 inch grids in the top and side view help with the scaling process. Please follow the Youtube video tutorial series in the instructions to learn the image scaling process.


Here is the 21-minute course for how to use this file. Don't skip any steps!
The image has to be properly scaled in the Blender frame, or the device will not fit properly.
This series is broken into four parts. The first is taking good orthographic photos of the client:
The second part shows how to navigate the Blender scene. I didn't make this video myself.
The third part teaches you how to import, scale and position photos into the background in Blender.
The fourth and final part teaches you how to overlay and position a design assembly over client anatomy to determine the best scale to print the device.

Please write comments. How can I improve this resource?

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I followed your tutorials and was able to resize the Phoenix hand to fit the photo, but now I am stuck. I can't figure out the scale. It says 2.56, but 256% seems too large, no? It is for a 15 year old boy.


I reviewed your tutorial, thank you very much! Can you add the RIT arm in your files? If not, please provide me sites that will allow me to size the device.

Sure. Which version? Send me a link to the files, and I'll assemble it in the Blender scene.

I wish to print the Flexy arm II Thermoformed: https://www.thingiverse.com/thing:1347824/#files
But I don't understand how to size the RIT arm part of this device.

Flexy arm II Thermoformed

Are these files only used for the Blender application? Is there no other application that works these files?

I'm not sure if there's another program that will open .blend files, but I doubt it. Did you follow the tutorial? It's pretty easy, I think.

I reviewed your tutorial, thank you very much! Can you add the RIT arm in your files? If not, please provide me sites that will allow me to size the device.

Where the are elbow acuated parts?

I don't have elbow-actuated devices yet. Which device would you like me to add?
Also, many of the elbow-actuated devices are thermoformed, which is hard to depict in this file. If you can tell me what device you'd like to make and I'll try to steer you to the best resources.

The Unlimbited Arm would be fantastic

That one's thermoformed. If you have an approximate .stl of the finished device, I could try to add it here. Also keep in mind that the fitting procedure for the Unlimbited Arm is documented by Team Unlimbited, and many people have followed those instructions with good success.

I see someone already asked but I would like to make the request as well. Please add Phoenix v2 https://www.thingiverse.com/thing:1453190 I am currently working with a teen and his mom who both are in need of a hand. they both suffer from the same genetic malformation. Due to the unique shape of the hand/palm I need to scale in the x,y,z directions. If anyone reading this has experience in scaling the Phoenix V2 differently in the x, y z direction I could use advice. Thanks for any help provided.

e-NABLE Phoenix Hand v2

According to the description of v2, the palm is the same as v1. The gauntlet (bracer) is thermoformed, but I actually used an approximation of the thermoformed gauntlet in the model here. When you actually do the thermoform, you will have a little more wiggle room than you see here, since you can thermoform the gauntlet a bit wider or narrower than you see here, to better fit your client.

Thanks for the quick reply. I will try this with the v1. When I stumbled upon this sizing procedure I found the Osprey Hand. I like the idea of a cable system more than the rubber bands on the Phoenix. I think I will build both and see which works best for the people i am doing this for. Thanks again -cm3

Yes, I think the Osprey offers better grip strength because of the lack of elastics. And elastics degrade. I'm the designer of the Osprey, so I may be biased. But I've worked with a lot of these kinds of devices, which is why/how I designed the Osprey. I think your client will be very happy with the simplicity, comfort and utility of the Osprey. It's what my son wears. The instructions include linked sources for the hardware I use, or I sell Osprey hardware kits for $50. A bit pricey, but it comes with the leather you need and all stainless steel screws.

wow, knowing you are the designer of the Osprey this is great. I am working with the mother and son. Both suffer from this genetic mutation. I plan to take pictures of the hands. If you are willing I would love to send you the pictures. I plan to take them very soon. I know these people from a Tae kwon do class we take together. I just watched your video (https://www.youtube.com/watch?v=aWRIi4bRGHs) I would very much appreciate your advice on how to scale the Osprey for these people. Once you see the hand(s) you will understand. I will follow the video and send you the pictures. If you are willing to offer advice on scaling it, and it will be very helpful. I have given the child (13) the Phoenix v2 (i printed it at 163% and it "just" fits ) so he can experiment with it. The smile on his face when he picked up a bottle of water with one hand for the first time in his life was priceless. I am more than willing to buy the Osprey kit(s) to do this project. My name is colin mackenzie. and my gmail address is the first 3 letters of my first name and the first 3 letters of my last name with .gmail.com to finish it. If you have the time please let me know if you do have the time to review the pictures of the malformations and possibly give me advice on how to proceed. The mother's hand is a bit more extreme. Well, it is better to share the pictures so you have a full understanding. I will also try and find out what this genetic mutation is, in the event it may give more insight on how to proceed. Thanks, for anytime you have.

Here's the playlist you want to watch. 4 carefully scripted videos, 21 minutes total. It will take you through the whole fitting process.
I'm happy to look at photos, and may be able to modify an existing design to fit, without having to print a huge device. A Phoenix at 163% is very large, especially for a 13 year old. I'll ping you by email so that once you get photos, you can show them to me. Make sure they know you are sharing with me, so they can give informed consent.

Hi, can you also include the Phoenix v2? Thank you!

See the response I wrote today to the other Phoenix v2 request. If you have any questions, or if you think my response is incorrect, please let me know.

Done. Thanks for the request!

Does this include the latest raptor reloaded design? Thanks!

Just so you know, the instructions are much easier to follow now. They're here: https://www.youtube.com/playlist?list=PLBHsuyNYSpxs4Xqj4_kzcbBiSby2tKqrH

Now it does. Thanks for the request. :)
If you want to add .stl files in Blender, go to File>Import>.stl and select the model you wish to add.
Or you can ask me to add them to the file here on Thingverse.

Awesome! Thanks for adding the new model and all the great work!

Both the .blend file and the instructions have improved a lot recently. Importing photos and sizing devices should be much easier now.

I was wondering if there was a video on how to best use this with blender and recipient pictures to get the best results? I've been working really hard on getting my 3d printer upgraded and tuned to be able to make these prints so I can contribute to the e-Nable project and think this is a great idea for helping get the best results. Awesome job!

The instructions are vastly improved now. Watch and follow the 21-minute playlist here: https://www.youtube.com/playlist?list=PLBHsuyNYSpxs4Xqj4_kzcbBiSby2tKqrH

Just so you know, I've made major improvements, both to the .blend file and to the instructions. Have a look.

Yes sir!
Don't skip any steps.
Good luck, and let me know if you hit any snags.