Tracking Work in Progress Inventory in a Millwork Shop

Work in progress includes material and partially completed assemblies moving through production.

Written by Coby BirenbaumPublished Oct 19, 20264 min read

Illustrative photograph of lumber and hardware storage in a woodworking warehouse

Tracking Work in Progress Inventory in a Millwork Shop

Work in progress includes material and partially completed assemblies moving through production. A pile of cut panels is neither unissued raw stock nor a finished cabinet. Give it a job, location, and stage so the team can find it and understand what remains.

Make partially finished work visible

Identify the job and assembly on carts or containers before parts leave the first operation.
Record the current stage separately from the next required operation.
Distinguish complete kits from partial kits waiting on a component.
Keep rework and quarantine visible rather than returning them to an ordinary queue.

A floor example

Twenty drawer boxes are complete, but their matching fronts are still in finishing. Marking twenty drawers as ready to ship would overstate readiness. A useful record says boxes complete, fronts outstanding, assembly location, and the person resolving the missing component.

Review aging

Look at time spent waiting between stages as well as processing time. Investigate the oldest unfinished assemblies, especially those occupying staging space without a clear next action.

Define what one unit of progress means

A cabinet job can contain many panels, doors, drawers, and hardware kits. Counting loose components and completed assemblies together creates a misleading total. Pick a useful tracking level for each stage and keep the relationship to the parent job. If the board shows assemblies, define what makes an assembly complete enough to advance.

A useful status record includes job, component or batch, quantity, current stage, location, revision, and blocking reason. Operators should be able to identify physical work from the record without relying on the memory of the person who last handled it.

Make partial completion explicit

Suppose an illustrative order contains twelve cabinets: eight are assembled, two await doors, and two have not reached assembly. Marking the entire job “assembly complete” hides the missing work. Marking it “not started” loses useful progress. Record the partial quantities and the specific shortage so the next decision is clear.

Avoid moving status forward merely because labour was booked to a station. Time records show activity; accepted output shows completion. Where a check or inspection is required, define whether that check is part of the stage's completion condition.

Use ageing to find stalled work

Review how long batches remain between stages and who owns the next action. An old queue may reflect missing hardware, an unresolved revision, or a station constraint. Moving the batch to another corner does not resolve the cause. Use WIP visibility to release fewer incomplete jobs, finish existing work, and communicate delivery risk with evidence.

Definitions and further reference

How Millbase can help your shop

Connect material records to the cabinet job

When a component shortage or material change affects a job, start with the recorded stock and the work it supports. Millbase inventory keeps quantities, material costs, receipts, stock lots, and usage history together. Use project tracking to review the associated labour and material costs, then reconcile the physical material before making a new commitment.

Ask the Millbase AI agent a question grounded in your workspace records. For example: “What inventory records do we have for this material, and what usage is recorded against this project?” You can select a project or worker, ask follow-up questions, and request supported reports and CSV exports.

Use the answer to locate the relevant records and investigate the exception. A physical count, approved specification, or supplier confirmation still establishes facts that have not been recorded.