Month: June 2010

Spirograph from old CD-ROM

Spirograph from old CD-ROM

I had the very great pleasure of meeting Ari Krupnik at the recent Bay Area Maker Faire. Among other cool toys, Ari was showing off his “RecycloGraph,” which is a two-piece Spirograph (Wikipedia) milled from an old CD on Ari’s ShopBot. Once he’s milled the profile, Ari turns the plastic over and etches words or graphics in the metal foil using a CNC laser. Ari’s selling them now using a “name your price” PayPal widget on his website.

Strongly bond metal to glass with rear view mirror adhesive

Strongly bond metal to glass with rear view mirror adhesive

The glue that holds rear view mirrors in place is amazing stuff, that breaks all the normal rules about adhesives: it holds a joint between two extremely smooth, entirely nonporous surfaces that are subject to near-constant mechanical vibration, extremes of temperature, and ongoing exposure to UV radiation. And it holds for years, even decades. If you are faced with one of those “impossible” gluing problems requiring a strong metal-glass or glass-glass bond, try using a rear view mirror repair kit on it. They can be had for a couple bucks from most hardware stores.

Mathematical Lathe Work

This week’s Math Monday on Make: Online is all about Bob Rollings‘ mathematical lathe work. George Hart writes: Another example of Rolling’s lathe work has a spindle icosahedron assembled around a solid great stellated dodecahedron. Although the great stellated dodecahedron has flat faces and is nothing like a baseball bat, it was completely fabricated by […]

MakerBeam begins to release specs

MakerBeam begins to release specs

MakerBeam, the open-source building set that got its start thanks to 132 Kickstarter patrons donating almost $18K, has released its first schematic. The above design, available as a PDF on Scribd, shares the most critical part of the MakerBeam design: a cross section of its Mini-T beams: with this PDF you could theoretically extrude your […]