Parts

Parts are the pieces you already stacked. Animation is built on the same rule as everything else: every piece stays its own piece, and in the Animate phase each piece is a part that can move on its own.

Open the Animate tab and tap a part. The card takes its name, and the hint walks you forward: pose it, then ➕ saves the pose. A Flatling made of one piece skips the tap; its only part is selected already.

What a part can do

• Pivot around an anchor , its hinge.
• Curl through a bend area , its spine.
• Hold up to six poses that play in a loop.
• Fire from a trigger when tapped.
• Ride another part , so rigs move together.

This is why the Stack phase never merges pieces: a merged cat is a statue, but a cat whose tail is its own piece has a tail that wags.