Custom Crafting, Slabs to Blocks

2 Stone Slab -> Smooth Stone Slab                  (Fails for 1.8 - ignore change output to "stone")

  # -Z  Sound, Piston Compress
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ playsound tile.piston.in @a[r=4] ~ ~ ~ 1 1.3 1

  # +Y  Result
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ blockdata ~ ~ ~ {Items:[
      {Slot:8b,id:"minecraft:double_stone_slab",Damage:8s,Count:1b}
    ]}

  # -Y Recipe
  execute @e[type=ArmorStand,name=GM4_CustomCrafter] ~ ~ ~
    testforblock ~ ~ ~ minecraft:dropper -1 {Items:[
      {Slot:4b,id:"minecraft:stone_slab",Damage:0s,Count:1b},
      {Slot:7b,id:"minecraft:stone_slab",Damage:0s,Count:1b}
    ]}

2 Sandstone Slab -> Double Sandstone Slab Block   (Fails for 1.8 - change output to "sandstone")

  # -Z  Sound, Piston Compress
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ playsound tile.piston.in @a[r=4] ~ ~ ~ 1 1.3 1

  # +Y  Result
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ blockdata ~ ~ ~ {Items:[
      {Slot:8b,id:"minecraft:double_stone_slab",Damage:8s,Count:1b}
    ]}

  # -Y Recipe
  execute @e[type=ArmorStand,name=GM4_CustomCrafter] ~ ~ ~
    testforblock ~ ~ ~ minecraft:dropper -1 {Items:[
      {Slot:4b,id:"minecraft:stone_slab",Damage:1s,Count:1b},
      {Slot:7b,id:"minecraft:stone_slab",Damage:1s,Count:1b}
    ]}

2 Cobblestone Slab -> Cobblestone

  # -Z  Sound, Piston Compress
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ playsound tile.piston.in @a[r=4] ~ ~ ~ 1 1.3 1

  # +Y  Result
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ blockdata ~ ~ ~ {Items:[
      {Slot:8b,id:"minecraft:cobblestone",Damage:0s,Count:1b}
    ]}

  # -Y Recipe
  execute @e[type=ArmorStand,name=GM4_CustomCrafter] ~ ~ ~
    testforblock ~ ~ ~ minecraft:dropper -1 {Items:[
      {Slot:4b,id:"minecraft:stone_slab",Damage:3s,Count:1b},
      {Slot:7b,id:"minecraft:stone_slab",Damage:3s,Count:1b}
    ]}

2 Brick Slab -> Bricks

  # -Z  Sound, Piston Compress
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ playsound tile.piston.in @a[r=4] ~ ~ ~ 1 1.3 1

  # +Y  Result
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ blockdata ~ ~ ~ {Items:[
      {Slot:8b,id:"minecraft:brick_block",Damage:0s,Count:1b}
    ]}

  # -Y Recipe
  execute @e[type=ArmorStand,name=GM4_CustomCrafter] ~ ~ ~
    testforblock ~ ~ ~ minecraft:dropper -1 {Items:[
      {Slot:4b,id:"minecraft:stone_slab",Damage:4s,Count:1b},
      {Slot:7b,id:"minecraft:stone_slab",Damage:4s,Count:1b}
    ]}

2 Stone Brick Slab -> Stone Brick

  # -Z  Sound, Piston Compress
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ playsound tile.piston.in @a[r=4] ~ ~ ~ 1 1.3 1

  # +Y  Result
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ blockdata ~ ~ ~ {Items:[
      {Slot:8b,id:"minecraft:stonebrick",Damage:0s,Count:1b}
    ]}

  # -Y Recipe
  execute @e[type=ArmorStand,name=GM4_CustomCrafter] ~ ~ ~
    testforblock ~ ~ ~ minecraft:dropper -1 {Items:[
      {Slot:4b,id:"minecraft:stone_slab",Damage:5s,Count:1b},
      {Slot:7b,id:"minecraft:stone_slab",Damage:5s,Count:1b}
    ]}

2 Nether Brick Slab -> Nether Brick

  # -Z  Sound, Piston Compress
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ playsound tile.piston.in @a[r=4] ~ ~ ~ 1 1.3 1

  # +Y  Result
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ blockdata ~ ~ ~ {Items:[
      {Slot:8b,id:"minecraft:nether_brick",Damage:0s,Count:1b}
    ]}

  # -Y Recipe
  execute @e[type=ArmorStand,name=GM4_CustomCrafter] ~ ~ ~
    testforblock ~ ~ ~ minecraft:dropper -1 {Items:[
      {Slot:4b,id:"minecraft:stone_slab",Damage:6s,Count:1b},
      {Slot:7b,id:"minecraft:stone_slab",Damage:6s,Count:1b}
    ]}

2 Quartz Slab -> Quartz Block

  # -Z  Sound, Piston Compress
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ playsound tile.piston.in @a[r=4] ~ ~ ~ 1 1.3 1

  # +Y  Result
  execute @e[type=ArmorStand,name=GM4_CustomCrafter,score_GM4_crafting_min=1]
    ~ ~ ~ blockdata ~ ~ ~ {Items:[
      {Slot:8b,id:"minecraft:quartz_block",Damage:0s,Count:1b}
    ]}

  # -Y Recipe
  execute @e[type=ArmorStand,name=GM4_CustomCrafter] ~ ~ ~
    testforblock ~ ~ ~ minecraft:dropper -1 {Items:[
      {Slot:4b,id:"minecraft:stone_slab",Damage:7s,Count:1b},
      {Slot:7b,id:"minecraft:stone_slab",Damage:7s,Count:1b}
    ]}