A build turns a project into a batch of devices and removes the parts it used from stock. Before you start, PartsBox shows what each board needs, what you have, and what you can build right now. Shortages are flagged in red, and you can still build a partial run when you have stock you have not entered yet.
Print a pick list for the floor. PartsBox decides which stock to pull, by location and — with lot control — by specific lot, using a strategy you choose: first in first out, last in first out, largest lot first, and others. Restrict a build to a single source per line when you want clean traceability.
Account for the parts a process wastes. Attrition adds a percentage, a fixed quantity, or both to each part, so a reel's leader and pick-and-place losses do not become a shortage halfway through a run. PartsBox shows the required quantity as "15 (12+3)", the base plus the overhead.
Build in one pass, or in stages. A multi-stage build lets you place part of the BOM now and the rest later — filter by a tag such as #smd to select a stage — while the device keeps one ID Anything™ code from start to finish. Every build is recorded: quantities, date, excluded parts, the exact stock and lots consumed, and the cost.
Building a project can create stock of a sub-assembly part, which you then use as a component in a larger project. This is how PartsBox handles products with several assembly levels. Enable per-device tracking, and each unit built becomes its own lot with a unique code and serial number, ready to carry test results and service history for its whole life.
Building is in every plan, including the free Maker plan. Sub-assembly parts and build history start on Essentials; attrition, multi-stage builds, and the advanced build system are on Production; per-device serial numbers are on Control.