PlanarityWaferBow is a fast helper for chip fabs and high-mix lines. It sets a clear takt time, balances stations, and shows bottlenecks or idle gaps. It sizes your Kanban cards and adds a smart buffer so parts keep moving. It snapshots wafer bow/warp, flags out-of-spec flatness, and warns on focus or handling risk. It checks mask overlay and registration against set limits and points to trouble layers or fields. It estimates etch selectivity and safe over-etch so patterns clear without hurting stop layers. It plans CMP removal and within-wafer non-uniformity to hit thickness and keep things flat; also gives a quick TSV heat/resistance check. It screens BEOL via chains for weak spots, picks safe gate-oxide stress windows, and checks solder-bump height and co-planarity for clean assembly.