
This is a really neat trick I dscovered using fences. It lets you align an armor stand's head with the middle of two blocks, allowing you to put heads on double shelves.

Step 1- Create this layout.

Step 2- Add water and let the armor stand flow into the fence post.

Step 3- Pick up the water, then quickly break the fence post. Then, break the water guides.

Step 4- Without breaking the blocks directly below the stand, replace the blocks two below with half-slabs.

Step 5- Break the blocks below the stand and let it fall onto the slabs. Then, place your head of choice on the armor stand.

Step 6- Place two pistons (regular) with blocks on their faces facing the "chest" of the armor stand.

Step 7- Power and unpower the pistons to push the blocks into the stand.

Step 8- break your piston assembly and fill in the hole.

Step 9- Build a decorative shelf and voila! you have yourself a nice centered armor stand double head shelf (thing)
|