Shield

Properties
Section	Solids
Spawn temperature	22°C
Heat Conductivity	0%
Relative weight	100
Gravity	0
Acid dissolve rate	0.1%
Flammability	0
State	Solid
Misc properties
Source code

Meant to be used as protection for circuits and often used in bunkers. SHLD does not conduct heat. SPRK makes it grow, and it is destroyed by excessive pressure.

When SHLD is sparked it produces a layer of SHD2 and another layer of SHLD on the outside, Process repeats with SHD3 and SHD4. When SHD3 or SHD4 is not surrounded by SHLD or SHD2 (such as when the outside SHLD layer is destroyed) it can grow new layers of SHLD to regenerate itself.

How to use, with pictures

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.

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

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.