A tiny human with outsized demands looked at the Big-Rex and issued a single, non-negotiable decree: "Big Dino chomps."

I am not an engineer. I want to be very clear about that. I am simply someone who cannot let a problem win. The shame pile in the corner of my desk, a graveyard of 60+ prototypes, stands as a testament to stubbornness if not to any particular skill or sanity. What followed was an embarrassing number of hours on geometry tweaks until rubber bands became the answer nobody asked for. Two printed parts. No hardware. No screws. No engineering degree required.

What you need: Orthodontic rubber bands, 3/16", 6.5 oz force. Stack as many as you like to dial in your preferred chomp. Polite nibble? One band. Full threat-display? Stack accordingly, and at your own risk.

Big-Rex bites things now. The tiny human is satisfied. The shame pile remains.

Huge credit to the original creator for an amazing design. I just had unreasonable demands to meet.

This is designed to fit the Big Rex dinosaur that's a 200% scale of the original.

[https://makerworld.com/en/models/566111-biting-t-rex-multipart-print](https://makerworld.com/en/models/566111-biting-t-rex-multipart-print)

Instructions:

Be patient with installation, the clearances are purposely built tight so the pieces don't move during chomping. It means getting everything where it belongs involves wiggling (in case you doubted I wasn't an engineer, I am indeed using wiggling as a technical term)