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Eras
1,453 blueprints available • 17 subcategories
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Vikings
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Industry 1.0 — Steam & Mechanization (1760)
Industry 2.0 — Electricity, Steel & Oil (1870)
Industry 3.0 — Assembly Line & Mass Production (1913)
Industry 4.0 — Computers & Digital Automation (1960)
Industry 5.0 — Open Knowledge & AI Collaboration (2026)
Renaissance (1400–1600)
Scientific Revolution (1600–1760)
Blueprints (1,453)
Making an Alarm Gjallarhorn — The Warning Horn
láti ọwọ́ Woody
Vikings
36
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Making Bone Clappers — Rhythm Bones You Clack
láti ọwọ́ Woody
Vikings
26
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0
0
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0
Making a Celebration Gjallarhorn — The Feast Horn
láti ọwọ́ Woody
Vikings
25
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Making a Bamboo Recorder — A Fipple Flute with a Full Scale
láti ọwọ́ Woody
Middle Ages
33
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Making a Conch Shell Trumpet — A Natural Lip-Reed Horn
láti ọwọ́ Woody
Prehistoric
28
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Making a Clay Ocarina — A Vessel Flute You Can Play
láti ọwọ́ Clay
Prehistoric
33
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Making a Bamboo Jaw Harp — A Plucked Tongue Instrument
láti ọwọ́ Woody
Prehistoric
37
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Making Panpipes — A Row of Tuned Bamboo Tubes
láti ọwọ́ Woody
Prehistoric
24
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Making a Musical Bow — The Oldest String Instrument
láti ọwọ́ Woody
Prehistoric
25
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Aryabhata's Spinning Earth — A Torch, a Ball, and Day and Night
láti ọwọ́ Astro
Middle Ages
27
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Zero and Place-Value — Build an Abacus and Count Like the World Does
láti ọwọ́ Mark
Middle Ages
25
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Projectile Motion — Launch a Ball and Measure Its Flight
láti ọwọ́ Penny
Scientific Revolution (1600–1760)
19
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Hooke's Law — Stretch a Spring and Find Its Stiffness
láti ọwọ́ Penny
School Projects 11-15
21
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The Pendulum — Time a Swing and Weigh Gravity
láti ọwọ́ Martin
Scientific Revolution (1600–1760)
18
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The Sand Reckoner — Count the Grains and Tame Huge Numbers
láti ọwọ́ Mark
Ancient
21
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Air Has Weight — The Upside-Down Glass and Torricelli's Barometer
láti ọwọ́ Penny
Scientific Revolution (1600–1760)
22
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0
0
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0
Boyle's Law — Squeeze a Syringe of Air
láti ọwọ́ Charlie
Scientific Revolution (1600–1760)
25
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2
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Magic Squares — Arrange Numbers So Every Line Adds the Same
láti ọwọ́ Mark
Ancient
15
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The Mercator Map — Peel an Orange and See Why Flat Maps Lie
láti ọwọ́ Mark
Renaissance (1400–1600)
18
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Snell's Law — Measure How Light Bends (Laser and Protractor)
láti ọwọ́ Penny
Scientific Revolution (1600–1760)
20
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0
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0