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 – Create A Hypnotic Display of Light & Sound- Science Desk Decor for Home and Office – Physics Toys for Adults & Kids 8+

Toysmith Euler’s Disk – Create A Hypnotic Display of Light & Sound- Science Desk Decor for Home and Office – Physics Toys for Adults & Kids 8+

Product ID: 264040499

Details

Age range (description)
Youth
Brand
Toysmith
Item dimensions L x W x H
25.4 x 24.1 x
Size
9.5 inches
Theme
physics

✨9 magnetized foils create customizable holographic effects

🌀3-inch chrome disk spins endlessly

🪞9-inch concave mirror base for hypnotic visuals

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Rp2624734

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Description

🌀 Spin Science Into Your Space — Where Physics Meets Wow!

COMPLETE SCIENCE SET - Includes 6 spinning disks, a 9-inch mirrored base, 9 foils, and instructions—everything you need to impress colleagues and inspire young minds.
COMPACT DESK ELEGANCE - Sleek 3-inch disk on a 9-inch mirror fits perfectly on any desk, blending science with sophisticated décor for home or office.
MESMERIZING KINETIC ART - Watch the chrome disk spin for minutes, creating a sonic hum and dazzling light show that captivates any workspace.
STEM POWERED FASCINATION - Inspired by Euler’s formula, this toy demonstrates gravity, friction, and kinetic energy in a hands-on, elegant display.
CUSTOMIZABLE VISUAL EXPERIENCE - Swap out 9 magnetized foils to tailor holographic patterns—perfect for sparking creativity or calming focus.

Toysmith Euler’s Disk is a premium chrome-plated kinetic desk toy that spins on a 9-inch concave mirror, producing a hypnotic sonic hum and customizable holographic light effects via 9 magnetized foils. Designed for ages 8+, it combines STEM education with elegant desk décor, making it a captivating conversation piece and a unique gift for science enthusiasts and professionals alike.

Specifications

ASIN	B000239E6Q
Age Range Description	Youth
Age range (description)	Youth
Best Sellers Rank	#11,857 in Toys ( See Top 100 in Toys ) #171 in Educational Science Kits
Brand	Toysmith
Brand Name	Toysmith
Customer Reviews	4.7 out of 5 stars 2,433 Reviews
Educational Objective	Physics Concept Development Skills
Global Trade Identification Number	00051168017096
Included Components	mirror base,9 pieces of magnetized holographic foil, instructions
Is Assembly Required	Yes
Item Dimensions	25.4 x 24.1 x 3.8 centimeters
Item Type Name	Toysmith Euler's Disk Science Kit
Item Weight	916 g
Item dimensions L x W x H	25.4 x 24.1 x 3.8 centimeters
Item weight	916 g
Manufacturer	Toysmith
Manufacturer Maximum Age (MONTHS)	960.0
Manufacturer Minimum Age (MONTHS)	96.0
Manufacturer Part Number	791709
Material Type	Steel
Model Number	791709
Set Name	Euler's Disk Science Kit
Size	9.5 inches
Theme	physics
UPC	793631620531 730309080280 736126283583 885167238509 051168017096
Unit Count	1 Count

Reviews

K**N

Super fun physics toy

10.04.2026

A**L

Excellent

7.04.2024

P**L

Exelente

Un producto excelente de buena calidad funciona a la perfección y llegó a tiempo vale la pena tener uno ya sea para laboratorio escolar así como para el hogar donde se puede observar la ley de la conservación de la energía

13.02.2024

米**一

不思議なオモチャ

非常に動き方が面白いです。止まりそうになってからの粘りがスゴイですね。

15.02.2020

S**Y

Very well made!

3.07.2025

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