[DumbRedneck]

I have a friend that lost his arm at the forearm and cant afford a 100K prosthetic, I want to print him a enlarged ( I have measurements) Cyborg Beast. Willing to pay for mats and shipping in BLK, or for a used/obsolete machine at a reasonable price.

[sburn]

You might want to specify the longest dimension of parts and the material required. Doing that will help somebody know if they have a machine that is capable. With that info, I'm guessing you can find lots of help in the Maker Bot / Thingverse community, if not here.

[keymaster]

@mharter is an industrial designer and he also has a 3D printer.

Industrial Designer

Hello GetHashing! Industrial Designer here. My skill set includes: -Product Design and Development -Package and Display Design -3D Modeling and Photorealistic Rendering -3D Printing and Prototyping I am in the process of working on an official website as we speak, but I will provide a link to my Coroflot.com portfolio for reference. I love what I do, I just happen to get paid to do it. I can provide assistance at any point of your project. Take a look at my work and if I can be of hel…

[mharter]

I have a 3D printer and would love to help you out! If I could use the project for my portfolio I would do it very cheaply...cost of plastic and electricity to run the job.

I have a build area of 10" x 8" x 8". Currently is am only setup for a single extruder, should be receiving my dual extruder this week. With the dual extruder I can print dissolvable support structure to print more complicated parts. I can print with PLA, ABS, PET and PolyCarbonate. Wouldn't recomend the PC as it has a lot of war page due to the high melting point.

Just to be realistic time frame wise, it would probably be a few weeks as I will need to assemble the new dual extruder and calibrate the printer. But I would love to have this opportunity. It would benefit everyone involved.

Here is a link to the printer I own, the MakerGear M2. www.makergear.com. You know the project better than I do right now, so you can get an idea if the machine will serve your needs. It has one of the largest build areas and the resolution and print quality is top notch (that's why I chose this model). If you are looking to purchase one, you can't go wrong and the price is amazing. I visited the company before my purchase and it is a class act. Tons of active development and research.

Let me know and we can talk more details. Would love to help out.

I KG of ABS filament is around $40 usd, just to give you an idea about costs.

[DumbRedneck]

all the parts are small 'cept the wrist cuff is 22.5 CM long, so i expect to do that in more than one section as well as the palm section at 9.75 CM the joints are all small parts, resizing the current plans to match. http://www.thingiverse.com/thing:261462/#files

I would like to run a test print in something cheap and if it comes out good we can talk about Polycarbonate. This will tend to be slightly more difficult due to part of the forearm being missing, but I have measurements of that, and can get any other measurements required in a short amount of time.

Give me a heads up when you want to start and what you need and I will send the coin up front.

[mharter]

Just checked out the model, shouldn't be a problem. Very nice design. I have the CAD software to properly scale the parts.

Here are some more details about the polycarbonate. As far as printing goes, smaller parts are the ideal candidates. Some of those larger parts will most certainly warp...just the nature of the beast. PC would be great for the smaller, intricate parts as it is an amazingly strong material. Using it in the high stress areas would be ideal. PC is also much more expensive...~$40-50 per LB, not KG.

I would say I could get started a few days after I receive the dual extruder. (I could get started on some of the parts sooner as some are rather simple, as far as printing goes) I'll let you know as soon as I receive it.

In the mean time, I'll download the model and run a simulation to estimate the plastic usage to be able to give you a pretty accurate estimate of how much plastic is needed. Just glancing at it real quick, it shouldn't be an extraordinary large amount of plastic. Maybe a roll or 3, tops. But ill get you more accurate numbers in the next couple of days.

Also, think about what color or colors you want. There is a decent selection of colors and you can mix and match and get creative if you want to. But each color equals a separate spool purchase.

This will be a first in the crypto world. My printer was paid with cash, but I used BTC for many other things I used to use cash for which afforded me the printer...so indirectly, crypto paid for the printer. It it will be the first prosthetic device completely funded with crypto! Newegg has filament and takes BTC. Amazon also has filament, could use purse.io to use BTC. We could be doing something real great for crypto awareness...some positive news for the usage of crypto...this is gonna be fun!

[DumbRedneck]

Also, think about what color or colors you want. There is a decent selection of colors and you can mix and match and get creative if you want to. But each color equals a separate spool purchase.

For the test prints we can use whatever, for a production print ill ask him what he would like (more than likely black/red) . The only problem i see is the missing part of the forearm that we will have to fill in and make a socket for.

[mharter]

The only problem i see is the missing part of the forearm that we will have to fill in and make a socket for.

We'll be able to work this out, just might take a couple prints to nail down the fit. But all the tools are there to make it happen. Modeling the part is no problem at all.

[DumbRedneck]

Its a left hand. the R forearm is 26.5 CM from the inside of the elbow to the wrist, the L is 15.5 cm from inside of the elbow to end of the stump, so looking like 11 CM or so of space to fill, end of stump is 22.5 cm around and 2 inches up from there 23.75 CM and 2 more inches up is 24.5 cm. so we know the fill and gauntlet volumes.

[paulc010]

Threads like this are what make this place awesome.

[k317x]

I have a 3D printer and would love to help you out! If I could use the project for my portfolio I would do it very cheaply...cost of plastic and electricity to run the job.

This is what it's all about. Thanks for stepping up!

[DumbRedneck]

I have looked over the design, I foresee having a problem as he has no wrist to engage the fingers with so we may have to redesign the tensioners to work from the elbow and print a band/lever for that and using a solid wrist instead of a jointed one.

The other option is to make them work from a clamshell over the forearm so when the forearm is flexed the pressure moves the fingers as he still has the ability to do that, again with a solid wrist.
Edit: or a micro pressure switch and a servo.......

This is looking to become a design challenge of its own.

[mharter]

I thought about this a little bit. Moving my fingers while holding my forearm, I can distinctly feel where across the forearm each finger corresponds to. I would imagine more than enough movement to trigger a small tension type switch. The thumb will be the challenge as I can't feel muscle tension to map on the forearm. Perhaps it activates with another finger's activation? Index finger. Definitely a challenge, but a fun one at that.

I use Trello to organize and map out projects. It's web based as well as app based. I'll create a project tomorrow and link you in and we can start gathering ideas and sources. It'll be our central hub for all ideas for this project. I'll PM you with all those details once I have it created. It's a great solution for projects like this.

[DumbRedneck]

Im thinking a single switch and a single servo/actuator, we will rapidly run out of room with 5 servos and murder a battery pack.

EDIT: Check out http://littlebits.cc/ I think those parts should be perfect for our needs. I dont want to get to complicated, the end user is no so technical. When we are done you should copy-write the design, get it in under 250 usd, and put the 100K thieves to shame.

Edit 2: Preliminary parts list.

[DumbRedneck]

We have taken this to a private board to not clog up HT with lots of posts, I ask for this thread to stay open for comments, discussion, or suggestions.

[mharter]

I ask for this thread to stay open for comments, discussion, or suggestions.

Absolutely! All ideas are welcome and constructive criticism is very well taken. There is a lot of brain power residing on this forum.

[BoB]

Damn, do you guys really have to take this to a private board? I've got to say, as an interested outsider that it makes for fascinating reading

[mharter]

We'll post updates often. There is just a lot of information and it is easier to use a dedicated platform to be able to organize and rearrange thoughts.

Actually, once we get things a little more organized and moving forward more, I don't see it being an issue to open up the platform we are using. We need to get outside input for sure.

[BoB]

Sweet, as much as I love being here for all the crypto stuff a nice little side show that demonstrates some of the technical skills of the people who frequent this place really adds to it imo

[DumbRedneck]

Trust me when I say it needs to be on a private board, my thoughts and research are all jotted down with no sense of cohesion, just possible avenues of approach to look at. Its a mess right now. It all makes sense to me, but im surprised @mharter has not run away screaming As we eliminate stuff it will get better,

Right now we are researching hardware/materials and electronic components, and @mharter is working on the CAD and expert information. Just the very beginning stages, literally starting from scratch minus a known working framework and placing the box in the fire.