Bruce Charles Designs

Spinning Base - 100mm Glass Concave Lens

36 reviews
5 Stars
94% (34)
4 Stars
6% (2)
3 Stars
0% (0)
2 Stars
0% (0)
1 Star
0% (0)

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$21.95

100mm (approx 4") - Double Concave Fused Silica Glass Optical Lens - Thickness 0.4” (10mm)

Precision Machined

Double concave lens. Fused silica. Harder and more durable than most for years of spin enthusiast fun

Functional, Elegant

Frosted reducing glass lens edges. Polished to a conversation-starting shine for record-breaking spins

Suits All Spin Tops

Made to extend the spin-duration of any spinning top’s contact point. Use one of your own, or take on from our collection for a spin

Hobbyist’s Delight

Know a spin top hobbyist? Our spin base promises to make a special someone smile and spin for years

Features:

Diameter - 100mm/10cm (3.93 in)
Thickness - 10mm (0.4 in)
Weight - 168 g (6 ounces)
Radius of Curvature - 875mm - center of lens is 2.8mm thinner than the edges
Material - Fused Silica glass

*Holds up better than standard plate glass or a standard spinning mirror but handle with care as it can still shatter if dropped from a height
Recommended for ages 16+

GIFT OF SPIN
Know someone with a beloved toy spinning top? Gift them speed, excellence, and elegance all in one fantastic gift!

100% SATISFACTION
Bruce Charles Designs holds ourselves to rigorous standards with a relentless commitment to bringing you something far from ordinary. But if you aren’t satisfied we will refund you in full no questions. 

ClickADD TO CART to spin your very own little piece of perfect.

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Customer Reviews

4.9 / 5

Based on 36 reviews

5 Stars
94% (34)
4 Stars
6% (2)
3 Stars
0% (0)
2 Stars
0% (0)
1 Star
0% (0)

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