Chain

{
  label = "Chain",
  shapes = {
      {4,0,7,6,4,9, texture="obsidian"},
      {10,0,7,12,4,9, texture="obsidian"},
      {6,4,7,10,6,9, texture="obsidian"},
      {4,12,7,6,16,9, texture="obsidian"},
      {10,12,7,12,16,9, texture="obsidian"},
      {6,10,7,10,12,9, texture="obsidian"},
      {7,2,6,9,4,10, texture="obsidian"},
      {7,12,6,9,14,10, texture="obsidian"},
      {7,4,10,9,12,12, texture="obsidian"},
      {7,4,4,9,12,6, texture="obsidian"},
  }
}
{
  label = "ChainBottom",
  shapes = {
      {0,0,0, 16,8,16, texture="obsidian"},
      {4,8,4, 12,16,12, texture="obsidian"},
      {3,8,4, 4,16,12, texture="gold_block"},
      {12,8,4, 13,16,12, texture="gold_block"},
      {4,8,3, 12,16,4, texture="gold_block"},
      {4,8,12, 12,16,13, texture="gold_block"},
  }
}
{
  label = "ChainTop",
  shapes = {
      {0,8,0, 16,16,16, texture="obsidian"},
      {4,0,4, 12,8,12, texture="obsidian"},
      {3,0,4, 4,8,12, texture="gold_block"},
      {12,0,4, 13,8,12, texture="gold_block"},
      {4,0,3, 12,8,4, texture="gold_block"},
      {4,0,12, 12,8,13, texture="gold_block"},
  }
}