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.
In most cases, any handsaw will work, but certain blocks may require a gem or diamond handsaw.
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.
Upon placement they allow for RedPower logic blocks to be placed onto them, as well as most other blocks. This allows for moving RedPower structures.