Notion vs. Slite for a Precision Contract Manufacturer

A shop running a handful of stable, long-running part numbers can manage revision control informally, a shared naming convention and a careful eye. Once you're issuing several engineering change orders a month across dozens of active part numbers, informal naming conventions stop being reliable, because the person renaming files today isn't the person who'll be searching for the right one under deadline pressure next month.

Slite's separation between a published, current work instruction and an in-progress draft maps directly onto how an ECO should actually move: drafted, reviewed, released, with the previous revision retired rather than just renamed. Notion can do this with disciplined manual conventions, but the discipline has to be enforced by a person, not the tool.

If you run under AS9100 or ISO 9001, or supply parts requiring a formal part-approval submission, your customer expects to see a controlled document process: who approved a revision, when it went live, and proof the previous version was pulled from circulation. A workspace where anyone can edit a live work instruction without a visible approval step is a finding waiting to happen at your next surveillance audit.

This doesn't mean every internal document needs the same rigor. Keep the controlled documents, work instructions, inspection criteria, quality records, in a locked, published structure, and let planning notes, tooling ideas, and internal scheduling stay in a looser space where speed matters more than an audit trail.

None of this matters if the person standing at a machine can't find the right document in under a minute. Whichever platform you choose, test it from the shop floor, not the office: can an operator search by part number and immediately see the current revision, without wading through superseded versions that were archived instead of deleted. A quality system only the quality manager can navigate isn't protecting anything; it's just moving the risk from the shared drive to a different tool.

A nonconformance report needs to reference the specific work instruction revision in effect when the part was made, the disposition decided on, and the corrective action taken. If your NCR process lives entirely separately from your document control system, you lose that link, and a repeat nonconformance months later looks unrelated to one your team already solved. Keep NCR and CAPA records cross-referenced to the specific document revision they relate to, in the same system, so a pattern across multiple jobs is visible instead of scattered across individual incident reports.

A work instruction that requires a certified welder or a specific machine qualification is incomplete without a record of who's currently certified to run it. Keep operator certification and recertification dates visible from the same page as the work instruction, not buried in an HR file nobody on the floor can see, so a scheduler assigning a job can confirm in seconds that the operator they're assigning is actually qualified for that specific process.

Shops with a small number of stable part numbers and no formal quality certification requirement often stay comfortably in Notion, using it for both planning and documents, with careful manual discipline standing in for formal document control. Shops carrying a formal quality certification, or running enough active part numbers that manual discipline breaks down, typically move controlled documents, work instructions, inspection records, NCR and CAPA logs, into Slite's more rigid structure, while keeping scheduling and planning in a lighter tool.

A hybrid setup is common in practice: engineering drafts a new revision in a flexible workspace while it's still being reviewed internally, and only the released version moves into the locked, published system operators actually pull from. That split keeps the drafting process fast without ever letting a half-reviewed revision reach the shop floor.

A workable setup includes these controls:

• Retire an old revision as soon as the new one is released and confirmed in production, and move it to a separate archive operators won't stumble into.
• Attach a customer's inspection criteria directly to that customer's work instructions and inspection plans, where the operator needs them mid-job.
• Keep a single unambiguous current version and a short note on who approved the last change, even in a small shop.
• Keep operator certification next to the instruction it covers.