If the disc spins faster the longer it goes how do you stop it?

It spins SLOWER the longer it goes (Precession). It sounds like it is spinning faster due to more of the disk laying down flat before it comes to rest.

Does anyone have a video of this in action?

Here is a YouTube video of a Euler's Disk https://www.youtube.com/watch?v=rFtYzVJcWyA

How do you patent a steel disk?

A design patent on the visual design elements is the most likely answer. A utility patent on details of the disk that optimize its action (such as a specific combination of edge finish, weight distributions, etc. is remotely possible, but IMHO, very unlikely.. The third type of patent is.a plant patent, which is what Monsanto (not Moderna) gets,. I’m pretty sure it refers to a design patent.

what's disc diameter?

Hello, Thank you for your interest in our products! The mirrored base is 9" diameter, chrome plated steel disk is 3" diameter x .5" thick. Thank you, Customer Service, Office Playground

Toysmith Eulers Disk Physics Science Desk Toy Chrome 3 Inches

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Description

🌀 Spin Science Into Your Workspace – Where Focus Meets Fascination!

GIFT OF GENIUS - Ideal for professionals and learners alike—boost focus, spark creativity, and join the community of science enthusiasts who know play fuels productivity.
COMPACT STYLISH - Sleek 3-inch design fits perfectly on any desk, blending science with modern aesthetics for a subtle yet sophisticated statement piece.
CUSTOMIZABLE VISUALS - Includes 9 magnetized holographic foils to tailor your light refraction experience and keep your desk decor fresh and inspiring.
STEM POWERED CURIOSITY - Hands-on physics demo that visualizes motion, friction, and balance—perfect for millennial managers who love smart desk toys with brainy appeal.
MESMERIZING KINETIC ART - Chrome-plated disk spins smoothly, creating hypnotic motion and a soothing sonic hum to elevate your workspace vibe.

The Toysmith Euler's Disk is a 3-inch chrome-plated physics desk toy featuring a mirror base and 9 magnetized holographic foils. It demonstrates principles of motion, friction, and light refraction through mesmerizing spinning and sonic hum effects. Designed for ages 8+, it’s a compact, manual STEM toy perfect for educational use, office décor, and anyone seeking a stylish, interactive way to engage with science.

Specifications

ASIN	B000239E6Q
Age Range Description	Youth
Best Sellers Rank	#32,240 in Toys & Games ( See Top 100 in Toys & Games ) #286 in Educational Science Kits
Brand Name	Toysmith
Color	Multi-colored
Customer Reviews	4.7 4.7 out of 5 stars (2,585)
Educational Objective	STEM
Global Trade Identification Number	00051168017096
Included Components	mirror base,9 pieces of magnetized holographic foil, instructions
Indoor Outdoor Usage	Indoor
Item Dimensions	10 x 9.5 x 1.5 inches
Item Highlight	Spinning Disk, Mirror Base, Light Refraction, Sound Display, Physics Demo, Desk Toy, Classroom Activity, STEM Toy, Ages 8+
Item Type Name	Toysmith Euler's Disk Science Kit
Item Weight	2 pounds
Manufacturer	Toysmith
Manufacturer Part Number	791709
Manufacturer Warranty Description	30 Day Warranty Against Manufacturer Defects
Manufacturer recommended age	8 years and up
Material Type	Steel
Model Number	791709
Number of Players	1
Operation Mode	Manual
Power Source	manual
Set Name	Euler's Disk Science Kit
Size	Compact
Supported Battery Types	No batteries required
Theme	physics
UPC	793631620531 730309080280 736126283583 885167238509 051168017096

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