The Zombie Hammer, Now with Skull Ejector
Slingshot artificer Jörge Sprave is at it again. This time he’s made a vicious slingshot (no surprise there), but with a second business end — a deadly counter-weighted spike, aka the Zombie Hammer.
CNC & Machining
The latest DIY ideas, techniques and tools for the manufacture of metal, wood, plastic, ceramic and composites. We talk about machining, using a lathe to machine metals like steel, brass, and aluminium. We make chips fly!
Free Download: Gamma Stirling Engine Plans
Rob over at MachinistBlog.com has been in contact with Dutchman Jeroen Jonkman, who has generously agreed to make the plans for his Stirling ’60’ gamma-configuration Stirling-cycle engine freely available for download there.
Retracting Key Ring Corrals Chuck Key
Using a retractable-chain key ring to keep your chuck key close at hand.
“World’s Smallest” Working V-12 Motor
A Spanish craftsman named Patelo skillfully designed and fabricated this tiny working V-12 motor from stock stainless steel, aluminum, and bronze for his grandchildren Sara, Carmen, Jose and Pablo. It took more than 1200 hours of work. Not counting the 222 screws, he machined all 261 pieces himself. The engine operates via compressed-air injection, has 12cm3 total displacement, 11.3mm cylinder heads, and a 10mm stroke on each piston.
The Sieg Mini-Mill: One Manufacturer, Many Brands
A full-size turret mill is, of necessity, a heavy, expensive piece of equipment, impractical for most individual owners due to space and/or monetary constraints. For hobby work, however, a so-called “mini mill” can perform very well. The chief limitation of a mini-mill is not so much the quality of the work it can produce, but the size of the work it can handle.
Milling Machine Basics
Chicago’s American Machine Tools Corporation buys, sells, ships, and repairs heavy machine tools all over the world. They also maintain a curriculum of free, online, non-brand-specific operator education materials, including the best general How to Use a Milling Machine page I’ve seen. There are no videos, but personally I prefer old-fashioned text and diagrams for this purpose. If you are interested in movies, however, check out MIT’s Introduction to the Mill.
Now That’s a Lathe
At the extreme opposite end of the spectrum from “hobby” machine tools are those used to build ships and power plants. I have no technical details about the lathe shown above, but the photograph was taken in 1957 or 1958 at the Doxford Engine Works in Pallion, England. If you like it, don’t miss the gallery over at Ships Nostalgia about English shipwrights William Doxford and Sons. It’s chockablock with absolutely gorgeous, amazing photographs of giant men building giant machines with giant tools.
