atoms&electrons;

I’ve partitioned my social networking life into two fairly distinct pieces. Facebook is for friends and family, and Twitter is for my technology hobbies. Facebook is for vacation photos, and Twitter is for the latest news on robotics, CNC, Maker culture, etc. One consequence of this is that I usually only check Facebook once or twice a week to catch up on what people are doing and reject requests to join The Mafia/Vampire Clans/Farmville. However, I find myself checking Twitter multiple times a day, because there’s a constant stream of interesting technology tidbits coming in. Twitter is the cocktail party full of interesting sound-bites to Facebook’s Thanksgiving Dinner at Uncle Ralph’s house.

By its very design, Twitter doles out info in bite-sized nuggets of 140 characters. So the information is concise and easily digested, and likewise my Twitter sessions are short but frequent. Taken to the limit, it becomes essentially a broadcast of information trickling in constantly so why should I poll for it in my browser? Now there’s a million-dollar idea – I think I’ll call it Push Technology.

I should probably start by saying I’m not an expert in Buddhist practices or those of just about any other religion. The sum total of my knowledge in this area was picked up from Chinese restaurants, re-runs of Kung Fu and the occasional PBS documentary. Somehow amidst the Honey Walnut Prawns and pledge drives I’ve become aware of an exercise practiced by Buddhist monks that I find fascinating.

Tibetan Sand Painting is an ancient art where monks creating beautiful and exquisitely detailed pieces of artwork with colored sand. It’s a labor-intensive process that can take days to complete, and the results are amazing. But when the art is completed they simply brush the sand away destroying the image. It’s a metaphor for the fleeting nature of life. That’s always seemed intriguing to me – creating something just to destroy it. Now I’m not sure if this next part is true or not, but I recall hearing that they destroy the artwork the instant it is completed. There’s no sitting around gazing upon their work in awe and high-fiving each other. The point of the creation is the destruction and nothing else. So the logical thing to do upon its completion is to immediately trash it. It’s religious meditation as punk rock. Maybe that’s why this idea is appealing to me.

One of my favorite toys at Techshop is the Epilog laser cutter. It can cut and etch at resolutions up to 1200dpi. It can cut through things like paper, cardboard, acrylic and thin wood as well as etching into those materials, metal and even food.

Lately I’ve been experimenting with creating pictures by cutting pieces out of colored card stock and stacking them up. The way to think about it is that each layer of paper gives you a single color – it’s like a 1-bit monochrome bitmap that’s either the color of the paper or transparent showing what’s behind it. Newspaper printers figured out ages ago how to deal with a similar set of constraints – a single ink color, but high resolution of ink placement – and approximate multiple shades of color using a technique called half-toning. Here’s how I adapted this technique for paper-cut images.