In 1906, at the age of 14, he along with his older brother Andrea (two years his senior), traveled to Mirecourt to study violin making with Leon Mougenot. Between 1909-1914, Carlo studied the art of bow making with Eugene Sartory in Paris, working alongside Andre Vigneron (1881-1924). Next, he traveled to Amsterdam where he spent several years in the workshop of Karel Van der Meer. Then spent close to a year in Germany until WWI, where he acquired a wealth of knowledge in restoration techniques and expertise in classic instruments establishing contacts with the top English and German dealers and experts.