Hi! Love the video on building a custom battery tray! This is a great connection for math class and I was wondering if you could answer a few questions that would help me make a corresponding math problem where I could also incorporate your video...1) What was the size of your original piece of metal? What were the dimensions of the squares that you cut out? Did the tray need to have a certain volume? Do you happen to have a picture of the completed tray along with the battery? Thank you for the info. Sincerely, Kelly (Math Educator)