Dating ovation guitars by serial number
Aviation and Independence After graduating, Kaman got a job developing the Sikorsky helicopter.
The problem that had led to Martin and the idea of making guitars in the first place also led Kaman to the idea of using synthetic materials in guitars.
Kaman realized how he could put his skills to another use.
Martin and Harmony Kaman’s helicopter blades were made of Sitka spruce, like Martin’s guitar tops, and with their expertise in precision tooling, he felt he could make guitars.
As a result he ended up with lots of cracked backs, including one on a favorite Martin.
Charles traveled down to Nazareth to get the guitar repaired and Fred Martin gave him a factory tour.