I used a box cutter to remove the fabric from the old sofa. There were a couple of yards. Before using it, I prepped the fanric. I soaked it in hot water and detergent, squeeze but don't crumple or wring it out, drain, Repeat several times over two days, until the water came out completely clear. I wanted to cleanse the fabric of potential chemicals as well as soil. I also wanted to pre-shrink it as much as it would shrink. That was a lot. Then I washed in the washer with a load of clothes with some all fabric color safe bleach. After drying at high temperature, I ironed the fabric. The treatment brightened the fabric significantly.
For the sides, I fused on a heavier, woven inferfacing. I made the liner with a muslin weight cotton. I made a quilted inner top, as I have done with other caps.
I did not make a hat band or sweat band. I like the less cluttered appearance. This cap is a little loose, so I might add those. Otherwise it'a fun cadet cap, and much cooler than the denim or flannel ones that I made bedore.
