SHLD element is meant to be a kind of shielding for electronics, since it has the properties of INSL, and the pressure properties of Goo. In order to use it, you only need to have a pixel of SHLD touching any kind of metal while sparked, and the shield will spread across the wire with the spark, growing more the longer the spark goes.

[[SHLD| Template:Http://i.imgur.com/Vyxyx.gif]]

The higher pressure goes, the deeper layers of shield disappear.

[[SHLD| Template:Http://i.imgur.com/k3qcR.gif]]

Nuclear explosions will essentially destroy shield, but generally not all at once due to the way pressure works. You'll have to mess with it.

[[SHLD| Template:Http://i.imgur.com/03kjj.gif]]