This is such an awesome key chain but can you figure out what makes it so unique?!

[blackburngaming]

It also has the wrong piston movement for a straight-4

[amneziaxeaster-gaming]

1-4 and 2-3 are supposed to be synchronize. Not 1-3 and 2-4

[afroman]

Yes the firing order isn’t right but it still demonstrates the movement of a piston and crank shaft
On almost every I4 (inline) the two center pistons (2, 3) are in the same position along with the outer most (1, 4) they aren’t in the same stroke cycle but in the same space compared to the other. A four stoke engine has four cycles suck, squeeze, bang, blow.
Well they look the same one may be squeezing as the other is blowing

[Granny_Gaming]

How would someone think that's an instrument

[kirolosabdelmalak]

Hey guys, I made a engine model keychain of the Mercedes m196 engine. It's in the maker world engine contest. It would be nice if you guys can just like it or something.

[Gmi]

“Hidden feature”
It’s the intended purpose.

[FishGuyDudeBroski]

It's been insane watching 3d prints go from little 1 colored figures to some really impressive and intricate designs

[MiroslavAlbert-eoyq]

Did you create this model, anyway where can I find it? :)

[noimoshimu]

"One piece "
Put him into Jimmy'shere ylyl

[alexspektrumdxe]

Where can I find the STL file for this

[citylockapolytechnikeyllcc]

Maybe on these maker shorts, I should advertise job openings for locksmiths. Electronics and maker types are a great fit. I love that lil engine!

[seangalloway]

yeah actually you got me, before i even saw anything or knew what was going on i was wondering why this 3d print is so unique bro

[The_Second_greatest_ever]

You should figure out how to make one that you can use a similar mechanism for adding or removing keys on it. So it becomes the key ring

[automatonfederation]

It looks like multi-material print too. Neat

[evilmonkeywithissues]

I'm calling BS. There's no way this is a single piece with no assembly AND contains moving parts.

[havelpants]

My intrusive thought is to attach it to a drill and test the rpm failure limit 😂

[leakingradiator]

Pretty cool. A little thinner and a couple tweaks and itd be a cool business card..

[Suchtzocker]

nice hype video to win the contest bro 😊

[madrenwillims]

It's supposed to go 1/4 and then 2/3...

[external]

I can already tell it’s some sort of an engine part.

Also that’s not how an inline 4 looks, but it’s cool! Now make a V version.