The inside story behind CEO changes at Titomic.

Last week was a big one for Titomic (ASX:TTT), which boasts the world's largest and fastest 3D printer system.

Titomic's Kinetic Cold Fusions printer can create objects 9 m long, 3 m wide and 1.5 m high, however the printing process isn't constrained to this booth size, meaning it could be used to print even larger objects.

Jeff Lang, former CEO of Titomic, made a surprise return to the top job this week, just six months after leaving the position to become the Chief Technology Officer.

Gilbert Michaca took over as Chief Executive Officer at Titomic at the end of June, but left suddenly this week.

In more positive news, Titomic also announced a $1.8m deal to manufacture titanium military drones, capable of withstanding a round or two, from an AK47.

Under the agreement, with Australian company TAUV, Titomic will also 3D print several other solider systems and solider sensors.

Jeff Lang spoke with InsideMarket's owner, Phil Carey, about the week that was.