From Parts to Product: Mastering Work-in-Progress (WIP) Inventory for Hardware Startups

1. The Problem: The Blind Spot of Manufacturing For software startups, a product is a codebase. But for hardware startups—building consumer electronics, smart appliances, or specialized equipment—a product is the culmination of hundreds of individual physical components. As these hardware companies scale, they frequently hit a massive operational roadblock: mismanaging Work-in-Progress (WIP) inventory. Most early-stage hardware teams only track finished goods. They know they have 100 fully assembled drones ready to sell. What they don't track accurately is the raw material: the microchips, the plastic chassis, the motors, and the screws. This creates the "manufacturing blind spot." An assembly line might be humming along smoothly, preparing to build 500 new drones to meet an upcoming product launch. Everything looks fine on paper, until the factory floor manager realizes they are short by exactly 500 specialized screws. The entire multi-million-dollar production run grinds to a catastr