I was able to purchase some .062 aluminum sheet from my local machine shop that has a lot of scrap pieces from jobs that work great for my purpose. I laid the pattern on the aluminum and marked the sheet using the pattern. After rough cutting out the panels I spent the time using belt sander, files and emery to get the shapes of the sub panel covers to fit right. Finally got them to fit good. Next I will get the inside center panel and sub panels fitted.