Build

A hand-held builder. You load it into a CAD and fire; it builds with the blocks on your hotbar, picked at random and weighted by stack size, taking each block from your inventory first so your hotbar palette stays full.

• Build Block places one block against the face you aim at.
• Build Line, Wall, Box, Stairs, Disk and Dome take two shots. The first plants a small anchor circle; while your CAD has that level selected, a white box shows what the second shot will fill. Fire again at a block, or into the air, to build a line, a wall or floor (always flat), a hollow box, a flight of stairs as wide as your two corners, a disk or a dome. The first shot costs the mana; the second is free.
• Right-click the anchor to turn it light blue: the second shot then carves the shape out instead, and the blocks go to your inventory. Press the cast key on an anchor to remove it.
• Build Vein replaces a whole vein of one block with your hotbar blocks, the mined blocks going to your inventory.
• Build Flood fills the hole or pond you aim at from the bottom up.
• Build Shelter seals you inside a 5x5x5 box of crying obsidian, no obsidian needed. Crying obsidian stands up to withers and explosions.

Every shot changes at most 512 blocks. To copy a whole structure and build it again somewhere else, use Blueprint instead.