Archive Entry

Single Wither Player-based Nether Portal Obsidian Farm

NPnether-portalNP003Archived Jul 10, 2025

✅Tested & FunctionalPlayer Generate

Authors:

meowphedrone

Endorsed by:

Scorpio

Player-based portal generation obsidian farm

Dark's scaffolding snow golem cage concept cubicmetre's movable wither cage concept Scorpio's idea using cod as a target for the wither
The cage has been tested with /tick warp and /carpet moreBlueSkulls for over 300 hours. (includes optional rail duper extension for junk item generation)

Features

Requires only one player going through the portals
Fastest nether portal obsidian farm before the release of 1.21
Uses 1 wither in a movable wither cage, instead of two stationary cages
Relatively simple and cheap (uses half the wither skulls as other portal based designs)
The portal is forced on the platform, so it's less coordinate sensitive
Requires less portal spawnproofing to run, than any other portal based obsidian farm

Obsolete due to changes in 1.21. isn't quite broken, but there are way better designs out there for newer versions
Requires the player to walk into the portal on their own (as F3+T mouse locking glitch resets upon reentry of a dimension)
Uses 6 stacks of junk items per hour to load chunks for the sake of simplicity
Nether side uses 1 slimeball (bad)
Directional due to how portals spawn (requires both sides to be facing the same direction)
Tricky wither summoning process

From Caribous's observation, junk item dispenser is unnecessary, as the player loads the dimension upon reentry, but just to be sure i left it in. remove the item dispenser at your own risk
Definitely works on SOME paper servers (tested on a few smp's) but it's not guaranteed to tolerate unloads and such
Might require less spawnproofing to run down in the caves, the higher you'll place the nether side portal.
Original thread: [Link]Message on Discord

WDL · ZIP