---
product_id: 282483989
title: "Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm)"
brand: "bruce charles designs"
price: "¥34816"
currency: JPY
in_stock: true
reviews_count: 5
url: https://www.desertcart.jp/products/282483989-bruce-charles-designs-spinning-top-base-5-9-150-mm
store_origin: JP
region: Japan
---

# Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm)

**Brand:** bruce charles designs
**Price:** ¥34816
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm) by bruce charles designs
- **How much does it cost?** ¥34816 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/282483989-bruce-charles-designs-spinning-top-base-5-9-150-mm)

## Best For

- bruce charles designs enthusiasts

## Why This Product

- Trusted bruce charles designs brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm)

## Features

- MAXIMUM SPIN TIMES. Made with fused silica. Harder, more smooth and durable than regular glass spinning top glass. Your spin top spins faster for longer with a flick of the wrist. No friction and more fun
- UNMATCHED QUALITY. Precision machined, solid double concave lens. 1500mm radius of curvature on either side. Heavier than most so our top spinning base stays in place for better spins. Also makes excellent reducing glass for artists or quilting
- LOOKS EXCEPTIONAL. Frosted reducing glass lens edges. For that added clean look. Because every great looking precision spinning top can use a great looking spinning top base
- SUITS ALL SPIN TOPS. From our own line of spinning tops to the others in your collection. This elegant spin station surface can extend your spin time and help you break records for bragging rights
- NEW SPIN ON GIFTS. From serious EDC spin top enthusiasts, casual players or anyone looking to up their spinning top game. Click ADD TO CART to get the most out of your spin toys!

## Images

![Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm) - Image 1](https://m.media-amazon.com/images/I/612L1dgmLnL.jpg)
![Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm) - Image 2](https://m.media-amazon.com/images/I/81qSn9rTs2L.jpg)
![Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm) - Image 3](https://m.media-amazon.com/images/I/91XnWpaciJL.jpg)
![Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm) - Image 4](https://m.media-amazon.com/images/I/915DnmGV6VL.jpg)
![Bruce Charles Designs Spinning Top Base 5.9” (150 mm) Diameter - Double Concave Fused Silica Glass Optical Lens - Thickness 0.45” (11.5mm) - Spin Top Glass Base Surface (150mm) - Image 5](https://m.media-amazon.com/images/I/91-HcwwARrL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Smoothe
  

*by A***P on Reviewed in Australia on 24 November 2020*

This helps me get over 6 minutes of spin time

### ⭐⭐⭐⭐⭐ 







  
  
    A Superior Lens for Spinning Tops
  

*by T***D on Reviewed in the United States on 9 March 2020*

I'm an avid collector of precision spin tops, and I've purchased a couple dozen glass spin lenses over the past few years to service the hobby. What initially caught my eye when I heard about this new Bruce Charles Designs spin top lens was the very affordable price of $17.95... three or four times less than I've typically spent for a spin lens.So... it's one thing to gauge the quality of a spin top, but how do you gauge the quality of a spin lens given that, in-the-hand, they often look and feel very similar. For me, that's easy... you compare the spin times you've achieved with the same top on different lenses that have about the same specs... which is exactly where the 100 mm (roughly 4 inches) Bruce Charles Designs fused silica lens really distinguishes itself. In the past few weeks, I have conducted spin testing with 12 of my favorite tops (ranging in weight from 18 to 65 grams) on my Bruce Charles lens and compared the spin times I achieved to my previous spin times on other lenses. Get this... I've set new personal best spin times for 9 of the 12 tops. Additional spin time has ranged from ~20 seconds to more than 2 minutes and has averaged just over a minute. That may not sound like a statistically relevant difference, but from years of spinning experience I can assure you, beating a personal best by a minute is a very big accomplishment. I don't know what's physically different about the BCD lens (and maybe it's just harder), but the difference seems to better preserve the inertia developed by the torque generated at launch, resulting in significantly longer spin times... and that's a metric we all seek in our spinning experience.Bottom line: I could not ask for more than a glass spinning top lens that is very affordable AND that allows me to achieve longer spin times. I bought three of these lenses sight unseen on the price alone, but the longer spin times give these lenses bona fide added value and allow me to highly recommend them to any spin top enthusiast. A truly superior lens for spinning tops!!

### ⭐⭐⭐⭐⭐ 







  
  
    For Long Spins, My New "Go To" Lens!
  

*by D***P on Reviewed in the United States on 13 February 2020*

In the long run, the spinning stage that works best at providing you with long spin times for your tops is likely to vary with your spin techniques and, curiously, sometimes for the top design itself.  The latter is a tough one to really know the "why?" of, especially if you have two tops of similar design, weight and size, with the same type spin bearing.  But, I've seen it happen, one top nearly identical to the other, actually spinning longer on a cheap mirror than on premium glass such as this lens.  Regardless, this lens from Bruce Charles Designs have proven so far to provide the longest spins for any top I've tried on it, and could control well enough to keep it on the smaller diameter, open edge stage, than any of my other spin bases, and believe me, I've got plenty that run the range from 3X mirrors to cheap science lenses in various sizes & focal lengths, to K9 and BK7 borosilicate glass lenses up to a 6" diameter.  With the very shallow concave surface, keeping a top on the lens can be a challenge relative to your spin launch skills, but you'll be rewarded with great spins once you master the technique needed by a particular top.  If all else fails, a "spin control ring" large enough to encircle the lens and stand maybe a half-inch above it, will help, and those can be 3D-printed, made from wood, fashioned from a strip of plastic or thick paper taped into a loop, etc....numerous possibilities.Now having 4 of these Bruce Charles Designs lenses and two bases, I can confirm that at least the currently shipping lenses as of Feb. 2020 are of a different design than specified in the details.  They remain at 100mm diameter but measure 10.5mm thick and have a 1000mm focal length for each side.  The weight is less, consistent with the lens being a little thinner, at 175g.  Overall, for my preferences this is a better design but again, some may favor a deeper concavity for potentially easier spinning.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/282483989-bruce-charles-designs-spinning-top-base-5-9-150-mm](https://www.desertcart.jp/products/282483989-bruce-charles-designs-spinning-top-base-5-9-150-mm)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-01*