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   _____   __   __    ______   _    _    _    _   
  / ___//  \ \\/ //  /_____// | || | || | |  | || 
  \___ \\   \ ` //   `____ `  | || | || | |/\| || 
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 /____//     |_||    `__ `     \____//  |_// \_|| 
`-----`      `-`'    /_//       `---`   `-`   `-` 
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Text this: Positioning holes on tubes to optimise energy absorption