Summary: Hydraulic Techniques Used In Professional Baseball

It takes approximately one week to manufacture a professional baseball following the League Standards set in 1872. It starts with the pill the pill is a small ball at the center of the base ball and is 10 ½ cm in circumference. In the pills center there is a sphere of cork. Covering the cork is a thick layer of rubber. First a latex adhesive is put in a drum and hundreds of pills are put in. Next they roll the drum so that each pill is coated evenly. They never dry completely and remain sticky to the touch. Next they wrap 4 ply wool yarn around the pill. Next it is wrapped in a 3 ply yarn and the ball thickens even more. They then wrap it in a lighter 3 ply wool yarn. Lastly they wrap the ball in a thinner poly wool blend because it is much
After the pill has been wrapped in all 4 yarns it is called the center. Then they weigh and measure the center which should weigh 4.48oz and measure 22 ½ cm. Next they add latex adhesive to a spinning drum then put the centers into it to evenly coat them. The center's absorb the adhesive and the yarn sticks together. The center's air dry for 48 hours but remain sticky. Using a hydraulic press they punch out figure eight shapes in leather and holes around the perimeter for stitching later. But before they go to stitching they stamp the date and lot number on each of them. Next they wrap the figure eights and wet towels for the moisture will make them more pliable to sow. They roll water-based adhesive onto one side of the cut out which sticks to the moist leather. Then they take two of the cut outs and put them on the sticky Center and it is a perfect fit. Next they clamp a ball in a vice and start sewing using the holes that were punched out around the perimeter earlier. Using two needles a sewer pulls thread through the ball's center and up through the holes around the perimeter in the leather to make a cross stitch them together. They rub wax on the threads to stiffen them. This reduces