Digital Fabrication

Digital fabrication tools have revolutionized the way designers, engineers, and artisans express their creativity. With the right resources, you can learn to use these powerful instruments in no time! Whether it’s 3D printing or laser cutting that interests you, these articles will provide useful tutorials and inspiration for makers of all levels. Discover how digital fabrication can open up new possibilities so that your craftsmanship is truly extraordinary!

CNC Milling a Spherical Ice Mold

CNC Milling a Spherical Ice Mold

We have covered these spherical ice molds before. I have used one, myself, and they work pretty well. A chunk of ice is sandwiched between two halves of a metal mold, and fast conduction of heat away from the ice, through the metal, causes it to melt wherever the mold makes contact. The mold halves slide on rods to maintain their alignment, and gravity does the rest. With a mold that starts at room temperature, it only takes a few minutes to make a nice shiny ice sphere.

The Tesla Valve: One Way Flow With No Moving Parts

The Tesla Valve: One Way Flow With No Moving Parts

Here’s yet another delightful mechanical curiosity from among Nikola Tesla’s nearly 300 known patents. Shown above is the sole drawing page from US patent #1,329,559, “Valvular Conduit,” issued 1920. You may have to stare at the upper section, for a moment, to figure out what’s going on: Flow from left to right, as illustrated, is against the valve’s bias—the stream is broken up and diverted in circular paths that return to interfere with each other. Flow from right to left, however, is not so impeded.

How-To: Your Home in a Snow Globe

How-To: Your Home in a Snow Globe

Visual effects artist Karl Stiefvater takes us through the steps he used to build a 3D model of his home (SketchUp and its handy “Photo Match” function), apply the textures (Maya), and produce the X3D file Shapeways requires for full-color 3D printing (MeshLab). He also covers such useful, decidedly non-virtual details as how to seal the model to prevent the color from bleeding, how to treat the water to prevent algae growth, and how to assemble the snowglobe kit itself.

How-To:  Rifle Shell Pen Body

How-To: Rifle Shell Pen Body

I have before identified Instructables user Mrballeng as a craftsman’s craftsman, and this latest offering only serves to reinforce that opinion. His work is not flashy or complex, but it’s always thought out with exacting detail and does amazing things with everyday materials. Here, he uses a mini-lathe to bore, swage, and align two .30-06 cartridge cases before soldering them together, at the joint, and fitting the guts of a refillable plastic click-pen inside. Cool stuff.