How to Make a Bionic Arm in metal Tutorial

Sentinel Steel
5 followers
11 Video Views·Jan 2, 2025
In this tutorial I show you how to make a Bionic Arm or Mechanical Arm, Robot Arm, etc. This is made from 20 gauge steel, although you can certainly use other materials to build it such as Eva Foam, fiberglass or plastic.
Bionic Arm Tutorial
By fantasy author David J. Guyton. This is all 20 gauge steel
Usually be converted to winter soldier arm or automail
the
Assembly is a little bit more
involved in this one, but it's
All still very straightforward and doable a lot of fun building it. I hope you will too. So grab your hammers. Let's get started
Get your template to build this yourself
By clicking under the video or in the video or going directly to armor templates.com
Where all of my templates are available
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every tutorial I've got I also get a list of tools and materials and
Links Amazon links to buy them from Amazon. So very handy to have
Cut your parts out
Using your preferred method we're going to leave these parts uncut though. You can see the little score marks there
We'll start by dishing the shoulder
there is I
guess a moderate amount of dishing in this one the shoulder being one piece the tricep being another and
the bicep and there's two two parts on the forearm that are also going to be dished but only the
The shoulder is dished I would say to somewhat extreme
See, I'm working the rounded side of the the ball-peen hammer gives me a much more
Dramatic curve once you get it pretty close. We're going to start planishing and get these ugly bumps out
Just use a flat hammer and a flat surface
mostly flat surface
This is a flap disc. I'm going to grind away a little bit of this these imperfections just because it's
I don't want to planish for a hundred years
Using some sandpaper. We're going to just roughen up the surface and make it all equally uneven if you will
This is one of the forearm parts
This does not get dished anywhere near as extreme as the shoulder
I'm rounding all the edges to
Make it look a lot more like a real muscle, which is sort of the effect. We're going for here
It's working on the edges again. Now. You can see I've got a little mark scored here
This is for the the Vambrace section
Or the part that goes around your forearm. We're going to bend it over
And start a nice flat
line there
And then just hammer it over and I see I'm not hammering it all the way down just most of the way and that gives you
a nice straight edge
And a rounded
Makes the metal look like it's more thick there, too
Takes a little bit of bending and working to get perfect
You're going to always be checking your other parts too to see if they're fitting because since all these parts are dished and curved
They change shape and you need to make sure that all of your parts in the end will go together
Here, I'm cutting out now that these parts are finally shaped. I'm cutting out the the parts the holes for the mesh
It's just perforated aluminum mesh. I had in the garage
And we're just going to glue it in with five minute epoxy
Simple as that
Now I just got some store-bought hinges and some roofing nails and we're going to rivet these parts together
Cut the nails off and hammer them down into a rivet
Again, you can see here. I have to trim some parts because it expanded a bit
So we'll trim those parts and get them to fit together. You do want to have a little bit of a gap though between all the parts
So your your arm can move inside of this thing. You're gonna have to do a lot of
Twisting and shaping to get it to work
Here I've got the edges filed off some washers
Now you'll see those later on a little tiny little
Plastic buckles and get for a few bucks at Amazon
That's what holds this thing together. You can see this is the bicep part here
Here, I've got some fine line tape. I'm gonna be painting on this number six
Why number six you ask because this is and I guess sort of technically the sixth gauntlet that I've designed. So we're six
Scuff it up make it a little ugly beat up. I love it
Here's your fan brace all together and painted
With acrylic paint this time not oil
Now I'm using a power punch to pop some holes. Here's some leather. We're gonna be riveting this stuff, too
And you can see I'm rolling it to kind of get a basic idea of how much leather
I'm gonna be needing for this and then carefully marking a few of the holes
not all of them just a few and
Then we're gonna put some nails through and start riveting sort of one side to the other so you want to
Just do those holes one at a time after that and line your parts up again one at a time pop the holes
You can see I got a bit of an overlap here, too
This is so that that hole is completely covered. You don't see any of your arm inside of it
Now I'm marking where the where the hinge point is in my in my on my elbow
So I know where to pop the hole in this thing as you can see I got a lot of leather left over
We're gonna take these two rivet holes out and rivet the leather inside of it as well
now it's a
Sort of a cohesive unit. This is a
Plain nail that I've used as a rivet here, but I'm going to glue this piece on to make it look more substantial
These are lock nuts and I'm gonna be cutting them off because I can't have that huge thing under there
I just need something very small. This is the hole to rivet the shoulder on with some bolts
I found for accent pieces
And this is the corresponding hole to connect the shoulder piece to the arm
And we'll cut these bolts off shorter to mount the strapping to the shoulder. Here's the glove. We're using this is a
unlined police glove
This is the finger jig you've seen a million times already
This is a one-inch pipe cut in half and embedded in wood
And then we're just gonna hit this with a hammer a couple of times until it
Makes it nice and round you can see the ends are left long on purpose though. This is because everybody's different size, so
You also need to trim these a bit on the top and make sure they line up with your knuckles right here
Otherwise you can't open your hand
And you can trim away a little bit of stuff as needed to make it more comfortable to move as you can see I had
To trim a little bit off the top of a couple of these fingertips
Here's the bottom part of the fingertip that I'm rounding and then we're gonna put it in the jig a lot like my demon hand
Gauntlet tutorial and we're not going to round that part sticking out just just the top of it, and then we're going to
bend that part under
Just like this and then you can sort of bend it by hand after that
And as you can see it it forms a fingertip
Which is pretty cool. This is a dapping block
I'm sure there's other ways you could probably do this without one, but it's pretty easy, and I had it available
So I just did it these are for the knuckle pieces
Just simple little round pieces that I turn into sort of a hemisphere and glue them on to the knuckles
this is the
knuckle, I'm sorry the thumb knuckle and
These are the hand parts, which we are going to glue to the top of the glove
And you got to make sure that they kind of line up pretty close
And then we're going to do the gluing not a very fun part
But necessary part you could probably rivet this stuff to you, but it would just take so much time
I don't have time for that. I got to make tutorials
So here we got the parts glued on and then I've got like some wire added a little bit of that corrugated wiring cover stuff
Just to finish it all up and there you go
Had so much fun building this guys. I hope you guys like it. I hope you guys like building it
I'm really excited to see what you guys can do with it
What kind of modifications you can make so come to the Facebook page and show me put your pictures up. I love seeing that stuff
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Check out all my other tutorials
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Anyway, I hope you guys had fun. I know I did. I'll see you next time
