Belleci worked for ILM for eight years as a model builder, sculptor, and painter.
Belleci began work on Discovery Channel's Myth Busters, in 2003, doing work behind the scenes and, in the second season, was featured as part of the show's build team.
The officer encouraged young Belleci to find a way of expressing his love for explosions and special effects that did not involve getting arrested.
he started working with Jamie Hyneman at M5 Industries.
At an early age, his father showed him how to make a Molotov cocktail.
When he was 19, he was nearly arrested for setting off a homemade pipe bomb near his parents' home in Seaside, California.In the show's third season, he received on-screen credit.In 2005, Belleci persuaded fellow ILM veteran Grant Imahara to join the show, following the departure of original cast member Scottie Chapman.He and Byron made a guest appearance on the October 3, 2012, episode of the Discovery series Sons of Guns.They test-fired some of the weapons in the Red Jacket shop and watched as the staff re-tested a myth previously busted by the Build Team: that a propane tank could explode if struck by a bullet.