Start with one complete part package
For a CNC machining quote, send a released part drawing or clearly mark the package as budgetary. Include the extrusion cross-section, the required operations, the quantity for each part, who supplies the stock and the date parts are needed at your plant.
A single representative part can start the conversation. For a firm quote, list every part and variant in the release, with its drawing revision and corresponding quantity.
RFQ checklist
- Part definition. Include the dimensioned drawing and a STEP model if available. Identify which file governs, the units, the profile ID and any left- and right-hand versions.
- Stock and finish. Specify the alloy and temper, stock length, surface condition and whether the bars arrive mill finish, painted, anodized or with a thermal break assembled. Identify who supplies the stock and who keeps usable remnants.
- Machining scope. Specify cut length and end angles, holes, threads, slots, notches and other required operations. Identify features that need special inspection, visible faces to protect and any burr or edge requirements.
- Quantity and timing. Provide the quantity per part and release, the first-piece approval date if applicable, and the required arrival dates. Flag any partial shipment that would let assembly start sooner.
- Acceptance and packaging. Include required inspection records, part and lot markings, finish protection, bundle sizes and packing order by job, floor, elevation or assembly sequence.
Make the quotes comparable
Ask each supplier to show setup and tooling charges, the per-part machining price, stock assumptions and the scope of inspection, packing and freight. Confirm which milestone starts the lead time. Drawing release, receipt of stock and first-piece approval can fall on different dates.