He lived in Munich, Germany Eppelsheim's father was a musicologist specializing in woodwind instruments.
After graduating high school and doing community service, he learned brass instrument making from Ganter (Munich) and Wenzel Meinl (Geretsried).
In Franz Traut's workshop (Munich) he spent years experimenting with S-bows and repairing saxophones.
During this time he built two experimental instruments that, although not interesting in themselves, were indispensable steps on the way to his own marketable developments.
Through this time he also made bass and contrabass saxophones, sarrusophones, and a variety of uniquely designed instruments on special order.