This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
Very often a hat has been worn for some time and it becomes too loose on the head, then paper is used in the sweatband to reduce the size. A better, easier, and neater method, as well as one that will be cooler for the head, is to insert a flat lamp wick inside of the sweatband. Wicks of all thicknesses and widths are easily obtained. - Contributed by Maurice Bandier, New Orleans, La.