Bicycle with Invisible Chain
Brass, free-cutting steel (12L14), stainless steel, carbon steel, ABS
Engine
0.00003-litre micro-vacuum engine, 100,000 times smaller than a 3-litre engine. Ran for only several seconds, but the challenge continues. Free-cutting steel (12L14), stainless steel, carbon steel, brass, synthetic rubies, etc.
Golden Egg
Egg: brass, carbon steel. Stand: free-cutting steel, purple heart wood, carbon steel, brass
Hairy Silver Egg
Aircraft-grade aluminum and human hair; manually-shaped object with individual hairs implanted into root cavities 200 microns (.2mm) diameter by 850 microns (.85mm).
Peace Bomb
Brass, high-carbon steel, free-cutting steel, etc. The core high-carbon steel ball is supported by three micro-clamps exerting equal pressure.
Steel Pendant
emerald cabochon, stainless steel, free-cutting steel, carbon steel, blued steel screws, 32mm (1.25") diameter, silky smooth rotation of center ball
Silver Egg
Egg: free-cutting steel, stainless steel, carbon steel. Stand: high-carbon steel, free-cutting steel, purple heart wood.
Tower
Brass, synthetic ruby ball, high-carbon steel, aircraft-grade aluminum, stainless steel, free-cutting steel
Hairy Watch
Seiko watch with stainless steel band and human hair; individual hairs implanted into root cavities 200 microns (.2mm) diameter by 850 microns (.85mm) depth on watch crystal, case, and band.
See-through Table & Chair
Brass, aircraft-grade aluminum, high-carbon steel, acrylic, lexan
Drumcutter
Brass, synthetic ruby ball, high-carbon steel, aircraft-grade aluminum, stainless steel, free-cutting steel. Case: canary wood, glass, brass
Hopper
Brass, synthetic ruby ball, high-carbon steel, aircraft-grade aluminum, stainless steel, free-cutting steel
(c) Osamu Kobayashi 2017-2020
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Ring with Synthetic Ruby (3 styles)
Tension ring with synthetic ruby ball, stainless steel band. For sale on my Etsy shop, OSK Micro-art Studio, HERE.
Loupe Pendant
Minimalist design, unisex functional art, hand-turned lens and stainless steel parts. For sale on my Etsy Shop, OSK Micro-art Studio, HERE.