Frayed shoe lace fix

Step 3 Shrink the tubing

Ideally the tubing is supposed to be shrunk with a heat gun, but any heat source will do. I grabbed a lighter and carefully held it under the tubing for a few seconds so that the top of the flame was about an inch below the tubing. Its not good to light the tubing on fire directly, so leave a little space and keep the heat source moving.