Number of Stitches on a Baseball Ball
Crowds will go wild for these professional baseballs and at the heart of each one is something called the pill. The pill is smaller than a golf ball it's about four and a quarter inches in circumference. Inside the pills rubber casing is a sphere of cork. They pour latex adhesive over hundreds of pills loaded into a drum rollers. Speed up the drum to evenly coat the pills with the adhesive. Next they loop four ply wool around the pill. This machine spins the pill to wind the yarn around it. This winding substantially fattens the pill. They wind a second layer of wool around the pills. This yarn is three ply and it thickens the ball a little more. For a third winding they use another three ply yarn but it's a bit lighter. The various layers of yarn are what give the baseball ...