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Picture of Laser cut a template for a sheetmetal box (flat pattern)
I made it at TechShop, www.techshop.ws, it's a template that I cut on the laser cutter to quickly lay out cut lines and bend lines on a piece of sheet metal. It's actually half a template as the pattern is larger than the 18x24" cutting bed.

The first step was to draw it in AutoCAD.

Step 1: I cut the template in half to fit the cutting bed

Picture of I cut the template in half to fit the cutting bed
I just drew a line down the middle and trimmed to it in AutoCAD.