aku-aku: v.. To move a tall, flat bottomed object (such as a bookshelf) by swiveling it alternatively on its corners in a "walking" fashion. [After the book by Thor Heyerdahl theorising the statues of Easter Island were moved in this fashion.] source: LangMaker.com. Aku Aku also has another meaning to the islanders: a spiritual guide.
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2 of 52: Jellyfish
Posted by dav at 2007 October 8 12:53 AM
File under: Art

I joined TechShop, a 15,000 square foot Shangri-La for maker geeks located south of San Francisco in Silicon Valley. It has a very impressive array of tools available for members to use from heavy duty sewing machines, to MIG welders, to an Epilog 45 watt laser cutter. On Saturday I took a basic safety and usage class on the laser cutter and tonight I went back to make my 2 of 52 things project.

Jellyfish Project

My idea was to take some nice paper I picked up at an art store and use the Epilog to cut out an intricate jellyfish pattern, then layer the jellyfish over another piece of fancy colored paper. Things didn't turn out that way, but I am pleased with the results.

Jellyfish Project

I started by looking for a creative commons licensed photo of a jellyfish on Flickr. I found several nice ones, but decided to go with this one. The next step was to turn it into a black and white bitmap in Photoshop and alter it until it was what I wanted. An important issue was converting the image from raster to vector graphics. Photoshop is great for raster graphics, but it doesn't do vectors. I have Illustrator for that, but I'm really not that good at Photoshop and I'm utterly lousy at Illustrator. I spent time tracing and erasing tentacles and trying to clean up the edges. After a couple of hours of fooling around I gave up and left it in raster format.

Jellyfish Project

Jellyfish Project

The reason it is important to convert to vector graphics is that I wanted to cut the jellyfish out of paper. Generally speaking, the Epilog machine cuts vector graphics and etches raster graphics. I experimented a bit and found I could essentially cut out a raster image (by burning away large swaths of material) but it as no good for my image since what I really needed was an outline cut.

Jellyfish Project

I etched out a few jellyfish images on paper, but in the end I scrounged around the TechShop facility for some scrap wood and ended up using that as my medium instead. I think it actually looks nicer than the paper would have anyhow.

Total time spent: 2 hours in photoshop, 1.5 hours on the laser machine.

Comments:

Very cool stuff! You're inspiring me to think in new directions with my own projects and to move outside of my comfort zone.

Posted by: Thomas on October 8, 2007 08:17 AM

Hey, that looks great! Did you see anything at the workshop that would allow me to create some really rough lenses? I don't need optical quality just something to distort light for my LED project.

Posted by: mcnibblet on October 8, 2007 09:23 AM

Optics, hmm. I'm not sure. There is a blabber mailing list for the site I signed up for, I'll ask there.

Posted by: dav on October 8, 2007 11:39 AM

I called and asked (they don't have a wiki yet and the blabber mailing list isn't actually set up yet). They don't have tools for doing optics but some people have brought in their own tools to grind glass there.

I just went by TAP Plastics at the bottom of Van Ness to get some acrylic for lasering, I noticed they have some pretty cool plastics that might work well in your project. You should check it out. Also, maybe you can etch a pattern into some clear acrylic to get the distortion you want?

Posted by: dav on October 8, 2007 12:09 PM

Nice work!!! What settings did you use for the epilog? Did you keep notes? Btw, Illustrator has a few ways of auto-tracing your artwork which work quite well.

Posted by: planoform on October 8, 2007 10:53 PM

I didn't end up writing down the various settings. I experimented a lot with various things. I think in the end for the paper I ended up with 100% speed and around 65% power. For wood I went up to something like 80% power and 75% speed for the raster and I did 2 or 3 passes on the vector cut at 40% - 75% speed and full power.

Yeah I heard Illustrator CS has some magnificent magic function for turning raster into vector easily, but I only have Illustrator 10 (and I don't even know how to use that). My neighbor is a professional designer and I'm going to get a private tutorial on Illustrator sometime soon hopefully.

When are you guys heading back down?

Posted by: dav on October 8, 2007 11:36 PM

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