Design · 4 min read
Designing parts for repeat manufacturing
How to set up a printed part so every batch matches: file versioning, approved settings, tolerances and inspection.
A part that printed well once isn't automatically a part that prints the same way every month. Repeatability comes from locking down the details.
Version the design Give each approved file a version. Any change — even a small dimension tweak — becomes a new version that is approved before it's used in production.
Lock the production profile Material, colour, orientation, layer height, wall count and infill all affect strength and appearance. Recording them as an approved profile is what makes batch 10 match batch 1.
Design in tolerance Put allowances for FDM variation into the CAD, especially for press fits and sliding parts. Avoid features that only work when a print comes out perfectly.
Define acceptance criteria Agree which dimensions are critical, which surfaces are cosmetic, and what defects are acceptable. Inspection is only meaningful against written criteria.
Approve a sample first A sample batch from the production profile confirms fit and appearance before volume.
Plan reorders Knowing typical quantities and frequency lets production be scheduled realistically rather than rushed.
General guidance for FDM printing. Results depend on your geometry, material and use — ask us about your specific part.