Mission 341
Kelp Chopper: Harvest a Whole Forest With One Button
Badge: Kelp Chopper
Video coming soon
Mission 341 hasn’t hit the channel yet. Subscribe and you’ll see it the day it lands.
Build a glass kelp wall and a piston chopper that fires with one button.
Your island burns through fuel fast. Build a machine that chops a whole underwater kelp forest with one punch.
- New skill Wiring a row of pistons to a button
- Level 4 · Legends of the Deep
- Difficulty Intermediate
- Mode Survival
- Time 45–60 min
- Ages 13+
What you’ll build
Build a machine that chops a whole underwater kelp forest at once. Dig a glass-walled trench, plant kelp and let it grow, then wire a row of pistons to a single button. Press it, scoop the floating haul and log how much you get.
Finish line: One press of your button chops the whole kelp forest and you've scooped up the haul.
Bonus challenge: Got nether quartz from Mission 333? Craft an observer and swap it for the glass above one piston, facing the kelp, back to the dust!
You’ll need
- Pistons
- Glass
- Redstone dust
- A button
- Water buckets
- Kelp
You choose
- My machine's name
- Wall length (6, 8 or 10 stalks)
- My bet for kelp per press
Stuck?
- Redstone breaking? Water washes away redstone dust, so keep it outside the glass and dry.
- Redstone dust needs a solid block under it to sit on.
- Gap with no water? Top it up with a bucket so the kelp can keep growing.
For grown-ups
Get this mission
This mission is in Mission Pack 34. Each printable has the full steps, a Plan & Log page and a parent page.
Print one mission at a time. You never need to print everything.
Played on Minecraft Bedrock on iPad. Buttons can differ on other devices and versions.