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     Doug Pratt of Pratt Hobbies has a "Shock Cord Protector" which is worth serious consideration if you have ever lost a rocket because your shock cord burned thru. (Been there, done that.) Doug's protector is a tube of Nomex® which slides over the bottom of the shock cord assembly and protects it from the hot gasses caused by ejection. Simple but effective. Ed Holland once said my motto was "blow it out or blow it up. "Ed was right and Bob follows the same credo. Ed was right and Bob follows the same credo. If you believe as we do, you need all of the protection you can get! I use insulation, flame shields, and shock cord protectors. Laugh if you like, but the only time my 'chutes get burned is when I lend them to other people.