Start with the correct drawing revision
A 2D drawing defines dimensions, tolerances, surface finish and machining notes. A 3D file helps the supplier understand geometry, fixturing direction and machining sequence. If the design is still changing, the current revision should be clear.
2D and 3D files serve different purposes
The 2D drawing should remain the primary source for tolerances, surface finish, datums and acceptance criteria. STEP or another 3D file helps clarify full geometry, interference and machining direction. If they differ, identify the governing revision before quotation.
- 2D: dimensions, tolerances, datums and notes
- 3D: full geometry, interference and fixturing review
- Revision in the file name or title block
- Defined acceptance document
Material, quantity and schedule affect planning
A one-off prototype, a 20-piece lot and a repeating monthly order may require different process planning. Material condition, heat treatment and finishing also influence sourcing and lead-time evaluation.
Mark the dimensions that truly matter
Not every dimension needs the strictest control. When functional faces, fitting holes, concentricity, flatness or assembly relationships are identified early, inspection can focus on the features that affect performance.
- Critical tolerances
- Functional and datum faces
- Inspection report needs
- Finishing and cosmetic requirements
How Jintat supports the review
Jintat reviews manufacturability, machining sequence and inspection priorities before production. If the request is incomplete, we can begin with the available drawing and clarify material, quantity, delivery and documentation step by step.
RFQ checklist before sending
Confirm the company and contact, drawing revision, material condition, quantity, target delivery, critical features, finishing and report requirements. Mark open items as to be confirmed instead of guessing.