This attachment mounts in place of your router’s factory baseplate and is used for cutting circular disks from, or boring circular holes in, sheet stock. It pivots about a small pin rotating in a blind hole drilled in the center of the stock to be cut. This one is based on a design from Bill Hylton’s excellent book Router Magic.
As much as I like Hylton’s project, I wanted to design a DIY trammel that did not require any table-mounted tools or expensive router bits for its construction. My version is laminated from three layers of quarter-inch stock, and replaces Hylton’s custom-milled T-slot and matching arm with a short piece of aluminum 80/20 rail, which is inexpensively available. The arm can be reversed in the slot to cut small radii, and Hylton’s dimensions have been slightly modified to provide a continuous range of possible diameters of about 2-22″.
With up to thirty hackerspaces participating in element14′s Great Global Hackerspace Challenge, it’s hard to summarize all of their work over the past few weeks. However, XinCheJian’s Ricky Ng-Adam’s GGHC Awards does a great job of profiling most of the projects competing in the contest, and even offers unofficial awards like “Best surprise working feature moment” and “Most advanced set of probes.”
If you’re following along, element14 will be announcing the semifinalists this coming Monday, and I’ll be interviewing each for the blog next week. Great work, everybody!
This outdoor YouTube theater by Cranbrook Academy of Art student Aaron Jones was constructed with zip ties and fence piping:
The structure itself is comprised of post processed chain link fence pipe selected for its inherent ability to form an interlocking system that erects in about a day. The physical manipulation of the material was achieved with a manual pipe bender and an ability to replicate effect through “pumps” of the equipment. When all conditions remain constant, a specific number of pumps will consistently produce a specific angle within the part. This consistency allows for an informed input into a digital design interface that could produce a predictable output for fabrication and in turn form a system with which to produce architecture. The ability of the system to form wall, structure, and also conceal component (audio + video) wiring evokes a “plug and play” operation that requires little to no education for the user.
The theater uses campus WiFi for connectivity and lets viewers control the playback with their docked smartphone. I, for one, think it looks perfect for watching selections from the enormous library of MAKE video content!
[via Architizer] The photos above are by James Carrillo.
Worlds smallest solar movie theater in a trailer