Expanding Your Island Safely with Stone Slabs

Stretching Your Stone Supply

Once your cobblestone generator is running, your main goal is expanding your floor area in every direction. Instead of building floors out of full blocks, craft stone slabs at your crafting table using cobblestone—or smelt cobblestone first if you want smooth stone slabs. Crafting slabs doubles your horizontal coverage from every batch of mined stone. Because this skyblock map fixes classic world generation errors, you can expand smoothly across the sky without running into broken sky chunks.

Bridging Over the Void

Equip your stone slabs, hold down your sneak key so you cannot walk off block edges, and back up to the rim of your island. Aim at the side face of the outer block to extend your walkway over the void. Pay attention to which half of the block space you place slabs on:

• Bottom-half slabs block hostile mobs from spawning on your floors even in the dark, keeping your growing base safe at night.
• Top-half slabs align flush with full blocks, letting you set down chests, furnaces, and torches cleanly without awkward gaps.

Once a platform section is wide enough to walk on comfortably, line the outer rim with walls or fences so you cannot get knocked into the void.