This past Spring, we got to take a tour of Ali Industries Inc., a sandpaper manufacturer in Fairborn, Ohio. The information we learned there went into our October 2009 article titled "How Sandpaper Is Made."

What surprised us most from our visit, was how Ali manufactures almost every aspect of the sandpaper – including printing, packaging, and even welding display units. So watch the above video for a behind-the-scenes look at how sandpaper is made.