Backlit Mosaic (HELP!)
I've come up with a pretty cool idea for an artsy-type project, but I need a few sheets of acrylic. I need about 20" x 40" (~1m x .5m) of clear acrylic about 1/4" thick, and about half as much transparent black and opaque black (thickness doesn't matter). The idea is to make a backlit, tri-tone, grayscale mosaic, with 10cm square blocks. The transparent sheet will be the base, and needs to be 1/4" thick so I can put white LEDs around the edge (unless someone has a better idea). It will need some kind of frame to keep the light focused on the inside. Anyways, the main point of this post was to see where I can find acrylic sheets. Since it will be an inherently "pixelated" type image, I guess I could use smaller sheets of acrylic bonded together. Does anyone know where I can buy this? I would prefer to buy it locally so I don't have to pay shipping, but Lowe's and Home Depot don't carry it as far as I can tell.
So there it is... my next project. I would love anyone's ideas, especially about using thinner sheets with LEDs, and ideas for a frame would be nice...
Also, what's the best way to cut and bond the acrylic squares?
Edit: added picture