Sinus was one of our very first molds back in 2006. As a first putter it wasn't exactly what we were looking for, but what it did great was to fly slow and overstable... which is the perfect recipe for a trustworthy approach disc. Sinus has been a staple for many players since then. However, the Sinus mold is outdated, and wear and tear on the mold parts has taken a toll. Sinus has not been in the best shape. It has not been as overstable as in the early years and the flashing underneath the dis