Basket's first look at 1.12 on the server: the recipe book and advancements, a fast batch of dark prismarine, then portals and running water at the top of the Iron Island item elevator.
Basket brings the Iron Island item elevator up to the top of the glass arc, tries three looks for the arc, then tests dark prismarine up top and hunts squid for ink.
Basket plans a white glass arc to carry the Iron Island item elevator over the chest ring, counts it out block by block, and rebuilds it until both sides finally meet.
Basket runs hoppers the rest of the way around the Iron Island chest ring, sets up a miscellaneous section, swaps corner torches for sea lanterns and fixes a section built one block off.
Basket lists everything the chest ring should sort, finds a torch that locks the wrong hopper, and works out a fix with johnfal_92 before wiring the redstone most of the way around.
With the sorter raised one block off camera, Basket tidies the corners of the underwater chest ring, argues glass spacing with johnfal_92, and drains the ring with sand.
Basket shows off a new ring of chests under the water on Iron Island, starts wiring up its item sorter, and finds the redstone leaks into the next chest at every curve.
Basket scraps the work done off camera, redesigns the top of Iron Island to be symmetrical, and starts a new set of paths that run right out under the ocean.
Basket fixes the item sorter again, adds more chests to the storage room, and starts dressing up the Iron Island iron golem farm with white glass and sea lanterns.
Basket studies a sorter that works, rebuilds the Iron Island item sorter around bone blocks, drains the old chests back through the system and lights the bedrock floor.
Basket builds the fourth and last cell of the Iron Island mob farm out of prismarine, gets a top-up of blocks from johnfal_92, and wires a new collection point at the bottom.
Basket digs down to bedrock under Iron Island, builds a hopper pad for the second mob farm and hooks it into the item elevator. JJBonsig joins near the end.
The Iron Island item elevator is finished, so Basket digs out room for storage, runs a water stream over the hoppers with packed ice from johnfal_92, and starts lining it with chests.
The item elevator needs the spot where the iron golems die, so Basket builds them two new kill chambers, then lights the bedrock floor with sea lanterns.
Basket repairs everything at an enderman farm, then spends the stream making the Iron Island item elevator look like a warp core: light blue glass, white rings, sea lanterns.