User:Pirateswithfleas/xpfarmv1/sorter

Layer 235 -- Immediately below the Collector. Top slabs are for head bumping (don't replace with whole blocks)

Layer 234 -- The top slabs on column 6 attached to the sticky pistons push bipedal mobs west by knocking them in the head, but miss spiders. Blocks used to conduct power are marked as SB (solid blocks, the yellow ones).

Layer 233

Layer 234

Layer 233 -- Drop area for spiders tapers out, robbing them of a sufrace to climb and break their fall. Bipedal mobs fall down a 1x1 chute.

Layers 213-232 -- This is the remainder of the two chutes. Every other column of the spider chute (right) can be omitted to save materials, but each of the four columns of the bipedal chute must be present.