The Evil Mad Scientists were presented with a challenge: inscribe one of Cliff Stoll's hand-blown Klein bottles, an object of surpassing beauty and odd topology. They modified an Eggbot plotter to etch the surface of a Klein bottle with a diamond engraver attachment.
So how would you etch the curved surface of a Klein bottle? It turns out, to our surprise, that it is remarkably easy to do it with an Ostrich Eggbot fitted with a diamond engraver attachment.
There was one complication, which is that a Klein bottle is a funny shaped object! In order to fixture the Klein bottle in the Eggbot, we made a couple of extra large couplers—much larger than the tiny pads normally used to hold the ends of an egg—with EVA foam rubber pads on their surfaces. The extra large couplers held the Klein bottle securely for rotation.
Marking Klein Bottles with the Eggbot
This smallish portable USB charger from Kmashi is rated at 5000mAh and is on sale now for $8.38 when you use promo code: PIRVWBWG on Amazon. I have a few different Kmashi chargers, and have used them for over a year with good results.
The flashlights in our household have a tendency to wander off. Where do they go? I gave my last remaining one to my daughter for a camping trip, so I just reordered an 8-pack of metal LED flashlights for $14. Each flashlight has 9 LEDs and uses 3 AAA cells (included, though some reviewers on […]
Unlike a multimeter, this battery tester isn’t battery powered. Instead, it measures the voltage across the terminals of 9V, AA, AAA, C, D and 1.5V button type batteries. It’s also easier to use than multimeter probes. It’s only $6.61 on Amazon and has a 4.5 star rating with over 1500 reviews.
Watching Netflix, Hulu or other streaming services can unfortunately be difficult while traveling outside the US. Rather than bypass these restrictions with the help of a complex and slow VPN, choose a faster and simpler solution with Getflix. Instead of rerouting all your Internet traffic through a different server, this handy service only routes the […]
Shake, stir, and muddle your way to delicious homemade cocktails with this must-have bar set. Expect only the finest quality tools from MakersKit — enabling you to unleash your inner mixologist.Top 12 Favorite Things of 2014, Sunset MagazineQuart-size vintage-style Mason jar shakerRetro double jigger for accurate measurementsStrainer & spouts for a mixologist-style smooth pourHardwood muddler […]
The Lytro Illum dares to be different, boasting even more robust features than its first generation predecessor and a sleek design reminiscent of professional DSLRs. What’s so cool about it? Most cameras capture the position of light rays, producing a statoc 2D image.