Originally Posted by Automatix
If it's not a secret what kind of materials?
All the talk is mostly about silicone.
Thank you in advance.
Given than Bosworth uses epoxy and lead rod, and Nate is a Bosworth disciple, that seems like a probability to me.
It's also easier to control the placement and amount of mass to be added in this manner, not to mention that it dries so much faster.