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

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$Toysmith Euler’s Disk Desk Toys Office Adults - Create Hypnotic Light Refraction Sound Display - Science Decor Home And Workspace - Kinetic Motion Physics Models Kids 8+$

Toysmith Euler’s Disk Desk Toys Office Adults - Create Hypnotic Light Refraction Sound Display - Science Decor Home And Workspace - Kinetic Motion Physics Models Kids 8+

Product ID: 1929010

🌀Spins up to minutes nonstop

🌈9 magnetized holographic foils for vivid light shows

🪞9-inch concave mirror base for mesmerizing reflections

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Description

🌀 Spin Science, Spark Wonder — Own the Desk Showstopper!

HYPNOTIC SPIN SONIC HUM - Experience physics in motion with a disk that spins endlessly, creating a soothing hum that captivates your focus.
STEM INSPIRED DESK DECOR - A sleek chrome-plated steel disk on a mirrored base that doubles as a conversation-starting educational tool for all ages 8+.
COMPACT FUNCTIONAL ELEGANCE - Designed to fit perfectly on any desk or tabletop, blending science and style without cluttering your workspace.
CUSTOMIZABLE VISUAL SPECTACLE - Swap out 9 magnetic holographic foils to tailor dazzling light patterns that transform your desk into a kinetic art piece.
PERFECT GIFT FOR CURIOUS MINDS - Delight colleagues, kids, or yourself with a unique blend of science, art, and stress relief that sparks wonder and conversation.

Toysmith Euler’s Disk is a compact, chrome-plated steel kinetic toy that spins on a 9-inch concave mirror, producing a hypnotic sonic hum and vibrant holographic light displays using interchangeable magnetic foils. Designed for ages 8 and up, it serves as an engaging STEM educational tool and stylish desk décor, perfect for home, office, or classroom environments.

Specifications

ASIN	B000239E6Q
Age Range Description	Youth
Best Sellers Rank	#28,450 in Toys & Games ( See Top 100 in Toys & Games ) #242 in Educational Science Kits
Brand Name	Toysmith
Color	Multi-colored
Customer Reviews	4.7 4.7 out of 5 stars (2,565)
Educational Objective	STEM
Global Trade Identification Number	00051168017096
Included Components	mirror base,9 pieces of magnetized holographic foil, instructions
Indoor Outdoor Usage	Indoor
Is Assembly Required	Yes
Item Dimensions	10 x 9.5 x 1.5 inches
Item Type Name	Toysmith Euler's Disk Science Kit
Item Weight	2 Pounds
Manufacturer	Toysmith
Manufacturer Maximum Age (MONTHS)	960.0
Manufacturer Minimum Age (MONTHS)	96.0
Manufacturer Part Number	791709
Manufacturer Warranty Description	30 Day Warranty Against Manufacturer Defects
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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