Notes

• The generated schematic is 2 blocks wider than the actual digging range. If you want a 17x17 chunk perimeter, you must input 274x274 instead of 272x272.

Side-Trenchless Smooth TNT Trenchers

• Author
• Duper and Kelp-proof Drainer — @zaihinado
• Main Control Panel and Wiring Optimization (2x Series) — @XkuanYa
• TNT 3D Aligner, Optimal Explosion Point Calculation, and Honeyless Drainer (2x Series) — @Sherlock4869_rhd

Description

• This design combines all the advantages of quarry trenchers while eliminating the need for a bottom trench. Furthermore, it is more cost-effective and easier to run and maintain.
• More suitable for the Overworld, as water is used for explosion protection. It only requires digging a border frame, marked by moss blocks at the four corners, down to bedrock. There is no need to manually clear the entire area. Each corner is equipped with tunnel bores at the top, which can automatically dig downward to the bottom, provided that all fluids have been removed beforehand. Alternatively, simply activating the tunnel bores is also a viable option. If you encounter fluids during operation, clear them before continuing.
• For a smooth wall finish, you can place water streams along the border. Note: water streams, not water source blocks — this is essential. The interior also includes a convenient device for placing waterlogged stairs while AFK.
• The design is snow-proof but not ice-proof. Also note that amethyst growth can break the water wall, and sculk sensors near the water wall may activate the pistons that push down the stairs.

Duper

• TNT floating-point errors will not cause the TNT to be launched and destroy the machine.
• 1x side-pull version
  Has a very small chance of destroying gravity-affected blocks outside the water wall. When a TNT floating-point error occurs, the TNT slightly clips into the slime block, causing it to be bounced off and land on the machine, thus breaking the machine. (Fixed in version Fix5)
• 1x kelp-proof version
  Has a higher chance of destroying gravity-affected blocks outside the water wall. There is a small chance that it will not completely clear the blocks under the stairs. If that happens, simply clear them manually and reset the drainer.
• 2x honeyless/kelp-proof version
  The TNT will not destroy blocks outside the water wall, even those with zero blast resistance. However, there is still a small chance that it will not completely clear the blocks under the stairs. If that happens, simply clear them manually and reset the drainer.

Usage

• Descent shaft Dig down from each moss block marker to the bedrock, then use the top tunnel bores to dig further down. Once done, remove the tunnel bores. Pour water streams along the border if smooth walls are desired.
• Main build Build the remaining structure. Set the schematic to hide the top tunnel bores, then verify it. After that, place the side stairs — this order helps avoid mistakes.
• Stairs Stand inside a composter, face the sign, and close the trapdoor. While holding stairs, right-click on the lower half of the composter. Continue until you can no longer place stairs from your current position, After placing the stairs, keep the waterlogged stairs, And remove the rest.
• Start/Stop Right-click the note block to start; click it again to stop. The redstone lamp acts as a status indicator, so you can easily know whether it's running or not.