This is a thread to show off your favorite style or method of lightening materials like sheet metal. I’d love to learn new patterns!
My current favorite is Isogrid (http://www.chiefdelphi.com/media/photos/38095).
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My favorite is cutting our team number into the panel using 1/8 holes. The small CNC router used in Project Lead the Way classes is great for this.
See the duck bill in this picture: