Hammond Manufacturing has been nice to use for the CANcrusher enclosure. The original box I chose was only going to be 1" thick, but I quickly ran out of vertical room and needed to upgrade (of course, this was after my board layout...) Thankfully, they had a direct replacement with the same L and W but with an extra .7" height for the design. In addition, they provide solid models for planning bezel layout and overall electronic placement. I used ViaCAD to design my enclosure layout and for exporting to MeshCAM to generate the gcode for the Shapeoko.