Hammer Projects

Pop-Pop Steamboat

Pop-Pop Steamboat

When you picture a steam engine, you likely imagine a giant cast-iron contraption festooned with knobs, valves, gauges, linkages, and wheels. This steam-powered toy boat has no moving parts and...

Posted by William Abernathy

Categories: Science, Kids & Family | 6 Comments


Gravity Catapult

Gravity Catapult

I have long been enamored of catapults. Invented around 400 B.C., they were used until nearly A.D. 1300. So for 1,700 years, catapults were arguably the largest, most expensive, and...

Posted by William Gurstelle

Categories: Fun & Games | No Comments


Pinhole Panoramic Camera

Pinhole Panoramic Camera

I bought a new scanner recently, and soon found myself spelunking through drawers of old photos from my many misspent years in photography. Some of the most interesting shots were...

Posted by Ross Orr

Categories: Photography & Video | No Comments