Panel

Panels are Sub Blocks with a thickness equal to 1/4 that of a normal block. They can be crafting by combining 2 Covers in a crafting grid, or by placing a Slab in crafting grid with a handsaw above or below it.

Crafting
In most cases, any handsaw will work, but certain blocks may require a diamond handsaw.

Usages
Panels can be combined with Covers, Triple Covers, Slabs, Cover Slabs, and/or Triple Panels of the same material to form another Sub Block with a thickness equal to the combined thickness of all the Sub Blocks used.