No TNT tree farm

Tango Tek's no TNT tree farm, tutorialised by SuperTechNinja. Slime and honey blocks on sticky pistons shove the tree apart while fence gates strip and break the trunk, so there is no explosive anywhere in it. That is the entire point: it is the farm for servers that block TNT duping, and several builders came to it after their duper farms stopped working. The catch is that it outputs stripped logs rather than ordinary ones.

• It makes stripped logs, not normal logs. Two builders only realised after finishing, and stripped logs cannot be turned back.
• Oak breaks the farm within about five minutes, because a large oak grows and destroys the machine. Put a solid block seven blocks up and a roof on the eighth, or just run spruce instead.
• Jungle loses all its saplings over time, so spruce and birch are the reliable woods here.
• Some logs get launched clear by the slime blocks and the collection misses them, so expect a steady small loss.
• The coloured blocks in the video only mark out the different redstone lines and can be anything. The temporary blocks look identical to the building blocks, which confused several builders badly.
• The main farm fits in 15 wide by 9 long by 14 high, or 17 high with the storage, which SuperTechNinja gives in the replies.