Pros : Used to cap HP printed decals as a protection
Cons : will not cap raw decals
Other Thoughts : Fired home made HP printed decals and then capped with Clear Coat and refired. Cap prevents the rubbing off of some of the decals that happens when fired on the exterior surface of a glass piece. Decals are darker and sharper. Remember to fire decals first above 1450F and refire at a similar temp after capping.