▲ 1 r/spinningtops
Good concave mirror? What magnifying? X? 10 - 90X?
reddit.comu/SASknl — 15 hours ago
I designed this 3d printable mechanical expanding spinning top and I think it's great fun and wanted to share it!
It's free on makerworld @unfadable
https://makerworld.com/en/models/2997752-mechanical-expanding-spinning-top#profileId-3365267