The Curta calculator, a small cylindrical math machine with a hand-crank on the top, was first dreamt up by in the 1930s who finished its design while imprisoned in the Buchenwald concentration camp during WWII. With its unique design and fascinating history, these antiques can sell for well over $1,000 today. Don't have $1,000 to drop on one? Good news, you can 3D print it too.
Redditor embarked on exactly that quest, and just finished his project after nearly two years of research and testing. The finished product has about 240 printed parts, and 100 or so non-printed parts, and weighs about three pounds. Wu posted , but here are some of our favorite shots:
If you're inclined to give this a try yourself, you're in luck. The print files and a build guide are posted . Just beware, as Wu's project diary shows, it's not quite as easy as throwing together some Legos. Still, it's a terrific project and a replica of a true marvel of engineering. And a heck of a lot cheaper than buying a real one.
All images by Marcus Wu with permission. You can find his blog .