Step 10: 3) Make the prosthetic arm
To make a fake arm, you're going to make a quick and dirty cast of your own arm.
For this, you will need:
- Cling film.
- Parcel tape.
- Garden wire.
- Card.
- Scissors.
Start by holding your shiny new helmet under one arm. Try to find a comfortable, natural-looking position that doesn't leave the helmet in front of your chest. Remember, that's where your Alien is going to emerge!
Now, keeping that arm in its position, use your other hand to put the helmet aside and wrap your stationary arm in cling film. Once it's covered in cling film, cover it in several layers of parcel tape. Don't wrap it too tightly, or you will lose circulation. And possibly fingers.
After a few layers of tape, you should feel that the wrapping around your arm is becoming stiff enough to hold its own shape. At this stage, carefully cut a slit down the side so that you can remove your real arm.
Reinforce the inside of your prosthetic arm with card and tape over the seam.
Take a length of stiff garden wire and bend it into a loop. Squash the loop so that it will fit down the inside of the prosthetic arm. This can now form a posable frame for the prosthetic arm.
Fashion the rest of the loop into a shoulder harness, as shown in the images below. Tape a few scraps of foam onto the wire for comfort.
For this, you will need:
- Cling film.
- Parcel tape.
- Garden wire.
- Card.
- Scissors.
Start by holding your shiny new helmet under one arm. Try to find a comfortable, natural-looking position that doesn't leave the helmet in front of your chest. Remember, that's where your Alien is going to emerge!
Now, keeping that arm in its position, use your other hand to put the helmet aside and wrap your stationary arm in cling film. Once it's covered in cling film, cover it in several layers of parcel tape. Don't wrap it too tightly, or you will lose circulation. And possibly fingers.
After a few layers of tape, you should feel that the wrapping around your arm is becoming stiff enough to hold its own shape. At this stage, carefully cut a slit down the side so that you can remove your real arm.
Reinforce the inside of your prosthetic arm with card and tape over the seam.
Take a length of stiff garden wire and bend it into a loop. Squash the loop so that it will fit down the inside of the prosthetic arm. This can now form a posable frame for the prosthetic arm.
Fashion the rest of the loop into a shoulder harness, as shown in the images below. Tape a few scraps of foam onto the wire for comfort.
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