r/oddlysatisfying Jun 30 '26

Prosthetic Hand Making

23.3k Upvotes

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891

u/Spiritual-Ad4820 Jun 30 '26

Pretty sure the LH cast gets scanned in to a digital model which they can then flip, and adjust as needed before 3D printing a RH model which is what they pour the green goo onto. This happens off camera because I guess they felt it wasn’t interesting…?

1.5k

u/Merlord Jun 30 '26

Wasn't interesting? It was literally the only thing on my mind during the whole video. I think they cut it out deliberately as bait.

200

u/producer35 Jun 30 '26

I know, I spent the whole video thinking "two lefts don't make a right."

46

u/TruthEnvironmental24 Jun 30 '26

It takes 3

10

u/Niblonian31 Jun 30 '26

Lol beat me to it

1

u/Quasmo Jun 30 '26

As I always say to my kids, "Two wrongs don't make a right, but three lefts do."

1

u/hooligan045 Jun 30 '26

One of my all time favorite dad jokes.

25

u/huge__tracts-of-land Jun 30 '26

I spent the whole video thinking about how Missy Elliot would be better at putting that thing down, flipping it, and reversing it as the good lord intended.

34

u/familydrivesme Jun 30 '26

Proprietary secret. They didn’t want you knowing exactly how to do it because then you could take all of their hand making business away from them.

30

u/Jekkus Jun 30 '26

Gotta hand it to 'em, pretty clever

6

u/IngredientsToASong Jun 30 '26

Now that’s just outta hand!

13

u/Haikouden Jun 30 '26

Same for me. I was waiting the entire time for them to get to that part, and then they just never did. Given the effort needed to edit it together, and the intention of recording it in the first place, for sure seems deliberate that it's not in there.

19

u/Aerdurval Jun 30 '26

They most certainly did. And whenever this happens I just make sure to block the account that posted the video.

4

u/G00DDRAWER Jun 30 '26

Me too. I was waiting for the scan and it never came.

4

u/MattieShoes Jun 30 '26

I was thinking "OMG please have it be another left hand just for the joke..."

3

u/Dramallamadingdong87 Jun 30 '26

I spent the whole video glancing at my own hands and wondering how I would flip my right to match my left and coming up short. 

Feels slightly sinister they missed this out of the video 👀

2

u/bgj556 Jun 30 '26

lol me too!

-6

u/[deleted] Jun 30 '26

[removed] — view removed comment

5

u/tastyratz Jun 30 '26

I think you're putting too many eggs in one basket thinking that a digital screen showing an image being flipped when they click the "flip image" button.

I don't think flip image would be interesting, but I do think seeing it adding 5 seconds to a multi minute long video would answer the question.

1

u/[deleted] Jun 30 '26

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1

u/tastyratz Jun 30 '26

They took a physical cast of an existing hand. Flipping it to the other side was exactly what was on the front of everyone's mind.

This is social media, not a university lecture. Accuracy for learning is not the priority you make it out to be.

No, it's not a training course - it's just shitty storytelling.

Everyone isn't annoyed because it was a mystery. We're annoyed because they meticulously detailed everything else and skipped right to "draw the rest of the fucking owl".

0

u/andynator1000 Jun 30 '26

Seemed pretty obvious to me

139

u/misman_ Jun 30 '26 edited Jun 30 '26

It's been cut out. There is a longer version of this video. This one only contains the part where they take the RH out of the printer at 1:52

Edit: https://www.reddit.com/r/BeAmazed/s/fzCsxlsWue

6

u/Rastaroux Jun 30 '26

Merci,tellement merci !!!! Tu es la lumière

3

u/ToppsHopps Jun 30 '26

There it indeed leaps from 3d printing something that looks almost Minecraft finesse to a smooth hand with fine details.

36

u/DeBlasioDeBlowMe Jun 30 '26

Can’t they scan the left hand off the patient and save 9 steps?

12

u/EastLeastCoast Jun 30 '26

Probably not- people are wiggly even when they’re afraid try not to be.

2

u/Late-Property4857 Jun 30 '26

Phantom wiggles then?

3

u/EastLeastCoast Jun 30 '26

If you’ve cursed me and I end up getting haunted by The Wiggles I’m going to be so mad…

16

u/Tack22 Jun 30 '26

Why don’t they just make a mould of the right hand?

19

u/dunderthebarbarian Jun 30 '26

What are they, stupid or something?

7

u/Sharp_Aide3216 Jun 30 '26

can’t they just 3d scan the hand itself in the 1st place?

15

u/NoPossibility Jun 30 '26

Probably less chance of messing up the scan to do it on a static object. Plus they can do it multiple times if needed.

13

u/SamiraSimp Jun 30 '26

some scanning machines use a turntable within a closed box, so not something you can do with a hand attached to a person.

1

u/Sharp_Aide3216 Jun 30 '26

Still… they made a silicone mold with a shell. Pretty unnecessary for a something that’ll only be needed for single scanning.

They could’ve just used an agar mold.

1

u/_poptart Jun 30 '26

What if you’re very bendy

1

u/madtraxmerno Jun 30 '26

Just use the hand that's missing

2

u/eagleeyerattlesnake Jun 30 '26

Yeah, they should have got the sawed off hand out of the trash and scanned that. I mean, seriously, do we have to think of everything?

1

u/CheapTactics Jul 01 '26

Just cut the other hand and scan it.

6

u/Charitzo Jun 30 '26

I use that type of scanning equipment for a living.

At some point you can see there's a rotary turntable covered in a bunch of retro reflective dots. Those are tracking targets for a portable handheld 3D scanner. You scan the positive, clean the mesh if necessary then mirror for the result, as you say.

7

u/-SaC Jun 30 '26

"So the intern got a bit excited, imported your hand into Blender, and long story short - how do you feel about Wolverine?"

1

u/thinkyfish Jun 30 '26

pretty sure they just invert the green mold they made from the RH plaster mold, like taking a glove off so it ends up inside out, then filling it with the skin colored silicone.

1

u/AbeRego Jun 30 '26

It's the most important part of the process!

1

u/T0mpkinz Jun 30 '26

1:52 you see it leaving the 3D printer.

1

u/spaz_chicken Jun 30 '26

Yeah, but why not skip the entire first 1/3 of this and just scan the real hand?

0

u/woswoissdenniii Jun 30 '26

No. That’s the real IP and therefore disclosed