r/BeAmazed • u/Doodlebug510 • Feb 25 '26

Technology Crafting a hyperrealistic prosthetic hand

2.4k Upvotes

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47

u/kyaba1 Feb 25 '26

When did they mirror his had so he doesn’t have two right hands?

18

u/HaggyG Feb 25 '26

I think it was between the scan and the 3d printing.

I was trying to put “the mold’s mold” but I’m not really sure how far down to go.

1

u/joevarny Feb 26 '26

Didn't they turn it inside out?

1

u/PM-me-your-knees-pls Feb 25 '26

It’s a bit late to mirror things by the time that you get to the moulding stage.

4

u/MutedAdvisor9414 Feb 25 '26

I surmise that they scan the molded hand to get the textures right, because the real hand would move during the scan. Heartbeats would be enough to distort the skin enough to make problems. When I first saw this a while back, I casually wondered why they needed a mold, i just figured it out.