No parts specified. Step 1 How to Replace Velcro on a Baseball Cap. Use a measuring tape to measure how much velcro you will need. Cut the precise amount of velcro to be sewn onto the hat. Pin the new velcro onto the hat. To prepare for sewing, thread the needle with a thread color of your choice. Click to see full answer. Consequently, how do you replace worn out Velcro?Brushing them with a toothbrush is one of the quickest and easiest ways to revitalise VELCRO® Brand fasteners – plus, you’ll probably already have a spare one in the bathroom cupboard! Lay the hook and loop fasteners flat and then brush them with short, hard strokes to remove any debris.Likewise, does washing Velcro ruin it? Leaving zippers, hooks, and Velcro closures undone. These can all catch on other clothing and damage them. Make sure everything is properly fastened before it goes into your washing machine. Similarly, it is asked, how do I bring Velcro back to life? Locate the rough, nylon side of the Velcro. Use the toothbrush to brush through this side several times to try to clear out debris. Clear out more fuzzy debris from the nylon side of the Velcro using the safety pin. Light a match. Carefully trim the fuzzy side of the Velcro with the scissors. Can you fix Velcro?Usually, you can make Velcro stick again by cleaning lint and debris out of it, but if your Velcro is old and worn-out, you’ll have to replace it. To prolong the life of your Velcro, take preventative measures to keep it clean.