Biting Shark Fidget

Edit 30/12/25: added 2 new sharks, the Hammer Head Shark and the Saw Shark:

This design was inspired by a classic shark, from a brand I cant say the name here. I made some changes that allow the shape to print without supports, and I added a biting mechanism to it:

it's a fun little toy and the biting action is pretty satisfying!

Here is how to assemble! But if you enjoy this please consider boosting me, its free!

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Allright lets get started

print all the parts (only 3, upper body is print in place where mouth is allready connected to body). 

Insert the fin into the upper body:

now take a small rubber band (I use one from the makerlab beginner kit, link below) and wrap one end around the insertion in the mouth. The other end goes in a little cutout in the fin part:

the rubber band should stay above the tabs in the middle of the fin:

Now align the tabs on the lower body part with the holes in the upper body:

click everything together, but try to keep upper and lower body part parallel. Be careful, the tabs could break when pushed sideways.

correctly assembled:

enjoy!