If you are using this product with the traditional Slow Match, the Slow Match Cord must be a tight fit in the Slow Match Tube if an ember is to be extinguished after use, it also needs to be a tight enough fit to prevent the cord from slipping out of the tube under its own weigh. With this in mind the snug fit can cause the cord to bunch – or bottle neck, if you will - up as it is pushed up the tube. The best method to enable you to move the Cord up and down the tube is to pinch the cord between your thumb and fore finger in your left-hand (if you are right-handed) and the Slow match in your right-hand and then twist the slow match on to the cord to move it up the slow match tube. This allows you to maintain pressure on the cord, which helps to prevent the cord from bunching/bottle necking. (Please see video - coming soon). Once the cord has been threaded through the slow match tube just remove the tape, burn the end of the cord to make char, gently pull the cord back down the tube so that the glowing ember end of the cord is 5 to 6mm beneath the opening of the tube, then place your finger over the mouth of the tube to extinguish the ember. The Slow Match is then safe to be placed in your Tinderbox, the charred end of the cord is protected and ready to use again when needed.