User:MentalMouse42/Sandbox/Misc Diagrams 1

Tiny Charcoal Generator
Source]

It's supposed to feed its product back into the furnace to fuel itself. However, it was an April 1 (2013) posting, so it warrants testing. At first test: Looks like it will not accumulate any charcoal in the chest until both the furnace and the hopper feeding it fuel (level 2) are full. The hopper can be "stuffed" with four non-fuel items in its last four slots, as long as you leave the first slot open for fuel. Then the chest will start getting charcoal after two stacks of charcoal are produced, which will require 2-$1/4$ stacks of wood.

If more than 5-6 stacks of wood are available, another chest can be placed atop the upper hopper.

As usual, using a hopper to take product from a furnace forfeits any experience from the smelting.

cobblestone generator
From video http://www.youtube.com/watch?v=E0jeCUt8ko8. This quad-pillar generator fits in a 4&times;3 hole, 5 deep with a couple of blocks dug into the layer below that. It produces 4 cobblestone on every fourth piston cycle. The build is demonstrated in this video by ZirumsHeroTWR.

Build tips:
 * 1) When planning, consider that the bottom-layer dist is directly below the on/off switch.
 * 2) When building the clock (north row of layers 0 and 1), place the repeater and set it to max before covering the level 0 components.
 * 3) While you are mostly working from the bottom up, you'll want to finish the switch column early.  This includes a sticky piston facing down; to place this, it help to place at least the output block on level 5, then work down from there.
 * 4) Go up to the surface to flip the lever twice.  This will pick up the switch block, turning off the clock before you place the pistons.
 * 5) Then finish the north wall and continue building in 3&times;3.  The cobblestone need not be placed, any blocks placed there will go up with the blocks above them.
 * 6) Place water first. then lava.
 * 7) Place any height limiters you want for the four columns, and fill the middle column with some non-pickaxe block -- sand, gravel, or wood will do fine.  That's just so your loot doesn't get stranded between the columns.
 * 8) Then turn it on long enough to push up the spare blocks above the cobblestone, and mine those.  Your factory is now running!