First article inspection
Structured report beyond T1 timing.
First article inspectionGlossary
What Is T1 Samples? Injection Molding Explained
T1 samples are the first molded parts off a new tool for initial review.
Glossary
T1 samples are the first shots off the tool for dimensional and cosmetic review
T1 is a milestone, not a promise that production window is fully locked.
First shots reveal gate vestige, shrink, warp, and texture transfer before process tuning continues.
Steel adjustments and process changes can follow T1 depending on results.
Buyers should inspect critical dimensions, Class A faces, and fit to mating parts.
Glossary
How t1 samples shows up on real programs
Library photos illustrate molding and tooling context for this term.
- Use the term in RFQs with geometry and material context, not in isolation.
- Link to the design guide when the term affects steel or part design.
- Upload CAD when the term changes tooling scope or piece price.
Inspection
What to review on T1 samples
Photos and measured data shorten approval threads.
Critical dimensions versus drawing with instrument list
Gate vestige and parting line on cosmetic faces
Color and texture match to approved sample or plaque
Fit to mating parts or fixtures called out on drawing
Go deeper
Where this term connects
Each link is a different angle on the same program, not a duplicate definition.
Gate
Vestige seen first on T1.
GateProcess capability
Capability after process stabilizes.
Process capabilityDesign guide hub
DFM issues visible on T1.
Design guide hubVisual reference
Photos from molding and tooling programs
Images are selected from the NetProto Forge media library for this topic.
Injection molded production parts on a tray
Injection molded production parts on a tray
Engineer reviewing a molded part drawing
Engineer reviewing a molded part drawing
Plastic housing components from a steel tool
Plastic housing components from a steel tool
FAQ
T1 questions
Is T1 the same as production approval?
Not always. Process tuning and steel changes can follow.
Can T1 parts ship to customers?
Only when your quality plan allows pre production shipments.
What if T1 fails dimensions?
Corrective action may include steel, process, or drawing revision.
Next step
Prepare for T1 review
Upload CAD with critical dimensions flagged before first shots.