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Arduino Laser-based Timing System
Very nice table. We're planning on adding a patio in the spring and I plan to build this. The one comment I'd like to add, having worked in the concrete industry for 12 years, is that concrete doesn't harden by "drying". Unlike plaster and clay, it hardens through a chemical process and water is the catalyst. If you actually keep it damp, it will continue to strengthen over the course of a month or so. This is why you see contractors spray a curing compound on freshly finished concrete. It's not so it looks painted. It's there to keep the surface from drying out and cracking.
These are beautiful. Thanks for sharing!
A cricut is a desktop cnc cutter that looks like a small inkjet printer. it can be used to cut paper, vinyl, etc. I've used one to cut out vinyl stickers that i would apply and use as a stencil for sandblasting. I happened to have an enclosed sandblaster at work that I could use. If you have an air compressor with enough capacity, you can get a sandblasting gun for pretty cheap at Harbor Freight.