[Chris Hibner]

We've used a lot of polycord over the years and have never had the joining kit. We join the ends using a standard lighter that you can buy at a gas station for $1, then just let the person with the steadiest hands hold it together until it hardens. We've never had a problem - polycord is ver flexible and doesn't need to be perfect.

One of the biggest reasons we would use polycord in your design is for weight distribution. Using the polycord can allow you to move the motor further from the tip of the arm.