Here’s what it looks like when a Spark first touches down and activated the Cybermatter inside the Well of AllSparks. The metal immediately begins to shape itself, accepting the Spark and forming a protective Spark chamber. The Spark chamber looks like a bump of metal, one to two feet across, and then other structures such as endoskeletons, wiring, and kibble will form around it. The Spark activated nanites which copy its code to learn the format for the body they’re building. Eventually the frame is full sized and it comes online to begin its climb out of the Well.
The closed Spark chamber:
Wing kibble growing. It’s about 4-5 feet across at this point: