I don’t always eat cereal, but when I do, I make business cards from the box.
This idea was shamelessly lifted from another space after Craig showed us a business card cut/etched from cereal box cardboard from them. I think the space in question is in Hawaii. (Update: That space is Maui Makers and Jerry Isdale in particular. Look to the first comment – he posted a link to the card he made that was the inspiration for this.)
Anyhow, no one had yet engraved a bitmap successfully with the laser cutter, so I set out trying to do this (more or less coincidentally – I couldn’t figure out how to export a filled shape from Inkscape in a vector format LaserCut would grok, so I rasterized it).
I tried first on the corrugated cardboard that we have a near-infinite supply of. However, this didn’t engrave well for me – its top layer is too thin and once you’ve burned parts of it off you have only the sparse ridges holding the other parts of it on. Maybe someone else will have better luck with less power. (This is not the first corrugated cardboard issue we’ve had…)
Cereal cardboard, interestingly, both cuts and engraves really well (though in the following photo, I set the power far too high and it visibly burned through). I would have preferred to etch from a vector logo, but it seems easier to get different shades if you start from a raster image and Floyd-Steinberg dither it to a halftone monochrome image, as LaserCut requires monochrome.
The LaserCut file is here: http://hodapple.com/files/hive13%20business%20card.ecp. If anyone wants to make a better-designed variant, please do – I consider this to be just a draft. A faster version might also be good. This one is around 7 – 8 minutes per card, but the speed probably could be cranked up a bit.
P.S. I suffered a cereal-induced sugar headache in the process of making these business cards. You all better be nice to me.