The Grand Design

The Grand Design is a tool which allows the player to place or remove any color of wire as well as Actuators. It also shows the dimensions of whatever is selected.

Creating the Grand Design costs in total. Its components can be bought from two rescued NPCs: the Goblin Tinkerer and the Mechanic. Due to the requirements of these two NPCs spawning, the tool can only be obtained post-Skeletron and once a Goblin Army has been defeated.

The Grand Design can be used at any part of the screen, regardless of block placement range. When pressing with the tool, a small menu will pop up at the cursor's position with six different buttons in a radial pattern. The outside buttons can be used to select which wire colors (including Actuators) can be interacted with, and the middle button will toggle between placing or harvesting the designated wires. In addition, as long as The Grand Design is anywhere in the inventory, seven buttons will appear on the left-hand side of the screen, controlling whether to display the ruler or not and whether to highlight actuators and/or the four different colors of wires.

Tips

 * This item is an effective way of dealing with traps, such as Explosives and Boulders, and serves as a far more compact way of storing wiring tools.
 * When dismantling naturally-generated traps, a Wire Cutter may be preferable, as the Grand Design cannot take advantage of the smart cursor. Therefore, it has trouble with diagonally-placed wires, like they often appear in the Dungeon.

Trivia

 * The internal name for both The Grand Design and its projectiles is "WireKite", possibly a humorous poke at its inventory icon resembling a real-world.

History
Le Grand dessein