Send one controlled drawing package
Provide the current drawing and model, units, material, quantity, revision, and target delivery window. Keep updates documented so every quote refers to the same version.
Define the work being compared
List milling operations, outside processing, finish, inspection, packaging, and any buyer-supplied items. Ask each supplier to identify exclusions and assumptions.
Review communication and evidence
Ask how drawing questions, revisions, approvals, and inspection records will be handled. Request only certifications or documents that your project requires and verify them directly.
Clarify delivery responsibilities
State destination, packaging needs, shipping terms, and responsibility for export or import steps. Compare landed scope rather than looking at machining price alone.
Confirm the service scope
Check that the offer is for CNC machined parts and the named operations. Review CNC milling capabilities and send the same package through the quote page.