Why Spreadsheet BOMs Are Costing SOLIDWORKS Manufacturers More Than They Realize

A spreadsheet BOM may look inexpensive, but when spreadsheets become the unofficial PDM system, engineering teams lose time, revision control and confidence in the product data moving downstream.

The spreadsheet is often your unofficial PDM system

For many small and midsized manufacturers, the bill of materials begins with a familiar routine: an engineer completes a SOLIDWORKS assembly, exports a BOM to Excel and sends the file to purchasing. The process feels fast because everyone knows the tool.

The real problem begins when that exported spreadsheet becomes the product record.

At that point, the organization is no longer simply using Excel. It is asking a spreadsheet, shared folders and email to perform the work of Product Data Management, or PDM.

PDM is the discipline of organizing, controlling and making product information available to the people who need it. That includes part and item data, BOMs, revisions, engineering files, product structures and changes. When those relationships are maintained manually, the business inherits a product-data problem even if nobody calls it PDM.

Where the hidden costs accumulate

The first cost is labour. Engineers re-export BOMs, clean columns and answer questions about part numbers, revisions and drawings. Buyers compare multiple files, request clarification and re-enter data into purchasing or accounting systems.

The second cost is uncertainty. A spreadsheet rarely tells the reader whether it reflects the latest SOLIDWORKS model, whether the correct configuration was used or whether a drawing changed after export. Teams compensate with emails, shared-drive folders and filenames such as FINAL_v7.

The third cost appears downstream. Purchasing may quote an outdated quantity, order the wrong revision or miss a long-lead component. Production may discover the problem only after material arrives or assembly begins.

These costs are symptoms of the same issue: product information is being copied rather than managed.

Why PDM becomes more important as the business grows

A spreadsheet workflow can survive while products are simple and one or two people hold the process together. Growth changes the equation. More configurations, reused components, suppliers, projects and concurrent revisions increase the number of relationships that must remain accurate.

The issue is not employee discipline. The process is asking careful people to reconcile too much information manually.

A modern PDM approach creates structure around the product record. It establishes where authoritative information lives, how revisions are controlled, how product structures are maintained and how engineering information is shared downstream.

OpenBOM: from PDM foundation to connected operations

OpenBOM provides a collaborative workspace for PDM, PLM, inventory and procurement. For a SOLIDWORKS manufacturer, the immediate value can begin with PDM: creating managed product structures, reusable item records, controlled BOMs and connected engineering information.

OpenBOM can connect directly to SOLIDWORKS and extract product structure and selected properties into a managed, multi-level BOM. Parts can be organized in catalogues and enriched with information such as preferred vendors, costs and quantity on hand.

That PDM foundation can then extend beyond engineering. Product data can support lifecycle processes, inventory-aware planning and procurement without forcing teams to rebuild the same information in disconnected files.

The value is control, not another database

The strongest business case is not simply replacing Excel. It is reducing the manual translation between design intent and downstream action.

A connected PDM process gives manufacturers clearer revision control, more dependable product records and a repeatable path from engineering into purchasing. PLM, inventory and procurement capabilities become more valuable because they are built on better-controlled product data.

For a SOLIDWORKS manufacturer, that means fewer hours spent checking files, fewer questions during handoff and greater confidence that downstream teams are acting on current engineering information.

Start with one measurable PDM workflow

Choose a representative assembly with purchased components, more than one supplier and a recent revision history. Map where its product information lives today. Count the exports, spreadsheet updates, clarification emails, duplicate files and manual entries required to move from engineering release to purchasing.

Then compare that process with a managed PDM workflow in which the SOLIDWORKS structure, BOM, item information and revisions remain connected.

The gap will reveal the real cost of the current process and provide a practical starting point for improvement.

Next step

Is your spreadsheet acting as your PDM system? Talk to SolidCAD about an OpenBOM PDM workflow assessment and see how a stronger product-data foundation can connect engineering with PLM, inventory and procurement.

Talk to a SolidCAD specialist.