I am a member of those forums and of here. Those forums are a much better resource for custom sabers, licensed lightsabers and for sourcing "saber smiths". However The RPF is an excellent source for learning about movie replica lightsabers, especially the ones that were made from found parts and that have no electronics.
A forum that specializes in one thing will almost always be a better source for that "thing" than a forum that specializing in many things.
My links will in no way rob the OP of the satisfaction of discovery, at least when it comes to learning about the world of custom lightsabers. In fact, they will do just the opposite.