All tree and fungus farm

Rays Works' fifteen-in-one tree farm, one redstone machine that runs oak, birch, spruce, jungle, acacia, azalea, cherry, poplar, bamboo, dark oak, pale oak, both fungi and both mushrooms, with a separate mangrove build alongside. You stand in the middle planting saplings while a hopper clock drives a TNT duper above and water collects everything. It comes in a duper version and a dispenser version for servers that block duping, and the material list is split accordingly: build the bottom part plus one of the two tops.

• At 11:06 it is 5 scaffolding, not 12. Rays pinned this as a warning after a dozen builders put the TNT too high to break anything. The total is 37 plus 5, not 37 plus 12.
• Ignore the extra dropper and observers that appear after the jump cuts around 7:21. Rays moved them underneath later and confirms it in the replies.
• The hopper clock item has to stack to 16, so snowballs or ender pearls, not anything that stacks to 64. One builder lost a day to that.
• Dark oak and pale oak are not sapling sustainable. You plant more than you collect and run dry after about five minutes, and 2x2 spruce and jungle are not supported at all.
• If logs and saplings come back short, check tnt_explosion_drop_decay on your server. One builder's entire rate problem was that gamerule set to true.
• You cannot wear armour. The farm damages you continuously and feeds you from a chicken, so a regeneration beacon is the alternative if you want your gear on.