What is a sticky hand actually made from?

[@GudBoyeNull]

i LOVE your set! you guys are criminally underrated

[@scitechstoyteardown]

Thanks mate! Really appreciate this :D

[@ictsmile8200]

Maybe a proper mask with proper filters should be used while it was melting . What were these fumes ? looked dangerous !

[@scitechstoyteardown]

100% - it's never a good idea to melt anything if you don't know what it is :) we were in a well ventilated space, and had a fan going, but looking back a mask might have been a good idea also - thankfully we knew this stuff was non-toxic, it was just steam. :)

[@LordoftheCats]

So, did you ever find out what they are made of and how we can get our hands (no pun intended) on some of the stuff to pour into shapes?

[@scitechstoyteardown]

Hi! It's a kind of thermoplastic elastomer (TPE) - which is a combination of different polymers. The recipe would be different for each kind of toy I guess! A helpful reddit thread pointed me to a paper mentioning isoprene polymer (a synthetic rubber), styrene-butadiene copolymer, or a poly(styrene-butylene-ethylene) copolymer along with tackifiers, and coloring materials. Explaining these needs it's own KZbin video! Basically, stretchy stuff, and sticky stuff. :D

[@lisalarsen-henry7245]

Want to go buy loads and melt them into one giant sticky hand!

[@scitechstoyteardown]

That would be so cool! If anyone wants to donate hundreds of sticky hands - let us know! (but also, we might wanna think of a good purpose for it first, so it doesn't become landfill!) haha

[@lukebaehr3851]

The fact that it re-solidified after boiling it tells me that it was manufactured as a heated liquid into molds. Or it's an anionic and a cationic polymer injected together into a mold, which would then solidify because of the magnetism of the polymer chain molecules.

[@scitechstoyteardown]

Sounds very likely :)

[@sxvage1]

I loved this video:) subscribed:)

[@capsfederation3154]

it was fun figuring out what in the world these things are. definitely need to dig deeper