Episode 66 picks up at Basket Castle with some work done off camera. The path up to the main entrance used to be stairs and is now half slabs, a gentler slope so "carts and wagons and stuff can properly get up here." The drawbridge is in, and so is the start of the portcullis. Basket walks through the plan for the gatehouse: arrow slits in the middle, murder holes up top, a room above for the drawbridge and portcullis machinery, and a path over the top of the gatehouse to the round tower next door.
Rope or chain
The drawbridge is six blocks long. When it is pulled up it reaches the top of the opening, which Basket lowered by a block because the doorway "looked too big." It needs something to hang from, and that's the first problem of the day. Droppers and dispensers get compared as the holes in the wall that the chains run into.
For the chains themselves, Basket has seen iron bars used online, but they feel bulky. Fences could pass for rope, and birch might look best. There's no birch in the chests, so Basket heads off to a tree farm for logs and a sapling.
Back at the castle, the birch "rope" goes up next to the iron bar "chain" and the stream gets a vote. Chain wins. "It's not my favorite but I'm in Minecraft so what are you gonna do." Observer blocks go at the top where the chains feed into the wall. The iron bars keep connecting to stairs nearby, which Basket didn't want. A viewer suggests turning a stair sideways, and Basket tries it, but the bars still connect.
Arrow slits
The wall gets stepped out one more block so there's room for an arrow slit. The first try is too low to shoot through, so it goes up a slab and the openings become slabs to see out better. "Now I can shoot, pew pew pew." The inner room gets slits on both sides too.
A nether brick portcullis
The portcullis is a grid, and the choice is spruce or nether brick. There's no nether brick on hand, so Basket goes back to the other base for netherrack, stops at the blaze farm for blaze rods to use as fuel, and smelts nether brick in the furnaces. Nether brick fence wins because so much of the castle is already spruce and the dark brick "looks more like maybe it's some kind of metal."
The gate will stay up most of the time. It's three wide, and Basket wonders about widening the wall, since that "doesn't seem like that big of a gate." The fence keeps joining onto the wall around it ("oh I hate minecraft"), so Basket shuffles the blocks behind it until it only joins at the sides, which is fine. A torch goes in so mobs won't spawn.
Murder holes
Up in the room over the gate there isn't much space. Instead of one crank in the middle, Basket plans two, one on each side, that would have to turn together to raise and lower the bridge. That leaves the middle free for murder holes: spruce trapdoors over gaps in the floor, angled to open the right way, for dropping "boiling oil" on attackers.
"It doesn't look impressive yet, but we'll get there." Ladders will lead down from this room, and the main path to the tower will run above it so nobody has to lead a horse over the murder holes. Basket makes it day and ends the stream there. The credits follow with no gameplay after them.