 He is better known as an engraver and is believed to have trained with Marcantonio Raimondi.He worked mainly in Mantua, Rome and Venice and with great success, producing etchings and engravings after the old masters and his own designs.He signed his plates "B., I.B., Julio Bonaso, Julio Bonasone, Juli Bonasonis, Julio Bolognese Bonahso".