Rich Decibels created a tutorial for designing and laser cutting a project enclosure. He covers everything from designing the circuit boards to visualizing the project in SketchUp, exporting the panels to Inkscape and then lasering the enclosure.
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The link to Flights of Ideas is something I have been looking for. I like using Sketchup for doing drawings, but I was never able to get it to where I could make G-code with it. With this I can draw up a perfect model in Sketchup, export to SVG, then open Inkscape and use Gcodetools to get my g-code for my cnc router. Now I just need time!