DO NOT use a gas or hot air torch to accelerate epoxy curing process during clubhead assembly. Better, place the club assembly in a 100-105 degree Fahrenheit warm environment that allows the chemical reaction of the epoxy resin and hardener to proceed slower but thoroughly. With this circular clamp you can use a hacksaw or rodsaw on both steel and graphite shafts without worrying about fiber tears and burrs. It was designed by Swingweight. The Dynamic Gold shafts are weight sorted and given the S300, S400, R200, etc.
None are frequency matched or frequency sorted.
Both varieties are very consistent and if you buy enough shafts and weight sort them yourself, you can do the same sorting job that True Temper does. Of course you don't get the pretty gold labels if you buy regular Dynamics. Actually, if you are building a frequency matched set, it is easier to work with the plain vanilla Dynamics if you need a slightly softer or stiffer shaft by pre sorting them and selecting a set of shafts on the light side of the spec or the opposite. Lengthening a shaft might easily give him more length with that club, but all changes made to length without other weighting adjustments alters swingweight. Almost every golfer senses changes in swingweight.