[使用: 工作台]

Scoria Bricks * 6

↓

Scoria Brick Stairs * 4

[使用: 切石机]

Scoria * 1

↓

Scoria Brick Stairs * 1

[使用: 切石机]

Scoria Bricks * 1

↓

Scoria Brick Stairs * 1

[使用: 切石机]

Polished Scoria * 1

↓

Scoria Brick Stairs * 1