How does a metallic bond make metals better conductors?

[LogicalAcid]

And how does it make metals better conductors? Is it because the free electrons move charges around better than things with electrons bound to the nucleus better?

 

[waxon]

Basically, it's the sharing of electrons in a lattice of metallic cations.

This type of bonding makes metals better conductors because these free electrons are mobile (not attached to a particular ion). If electrons from an outside source enter a metal free electrons will be able to move along the metal.