EDM Cut Components Tooling and Fixture Guide for Aerospace Suppliers: the 2026-2027 cycle Guide No.251

Sourcing EDM cut components in Italy has become a question of process capability rather than catalogue choice, because most suppliers quote the same machines and differ in how they control them. Below is a practical, step-by-step view written for Aerospace Suppliers that want fewer rejects and fewer schedule surprises.

How the Part Is Actually Made

For EDM cut components, the critical characteristic is surface roughness and recast layer check, and it should be measured on the production run rather than on a hand-finished sample. Confirm the drawing revision in writing, and make sure the shop is programming from the same revision you approved. Ask how the part will be held during machining, because fixture design usually decides whether a tolerance is repeatable.

Understanding the Quotation

Ask for a cost breakdown by operation; it turns a price argument into a process conversation. Setup cost is spread across the batch, so a small batch carries a disproportionate share of programming and tooling time. Ask what the price would be at double the quantity; the answer shows you how much of the quotation is fixed cost.

Supplier Selection and Vetting

Find out whether the shop runs a formal first-article process or simply measures the first good part and ships it. Ask for two customers already running EDM cut components programmes and speak to them directly. Look at how the shop stores material and tooling; housekeeping on the floor is a reliable predictor of process discipline.

Finishing, Packaging and Delivery

Rust prevention is the detail that decides whether a shipment arrives usable, especially for ferrous parts on a humid route. Photograph the packed pallet before it leaves the shop; it settles most damage arguments before they start. Confirm who arranges the export documents and the certificate of origin, because that task is often assumed by both sides. Label every carton with the part number, revision, lot and quantity so that receiving is quick and accurate.

Quality Control and Inspection

For critical programmes, put a dimensional report in the carton so that receiving can verify the lot without opening the packing. Agree in writing what happens when a lot fails, including who pays for sorting, rework and the return freight. Book a first article inspection before the run is released, and require the report to list every dimension against the drawing. Keep a golden sample sealed at the supplier and a matching reference in your own store.

Compliance and Traceability

Ask for quality system documentation such as ISO 9001, IATF 16949 or AS9100, dated and covering the site that will run your parts. Where the part is safety-related, agree the record retention period before production begins. Confirm that the test house is accredited and that the report names your material or your part, not a generic specimen. Request material certificates, dimensional reports and, where relevant, first article inspection reports with the shipment.

Final Checklist

Release the drawing, approve the first article, book the inspection, lock the packing and prepare the paperwork. Five steps, and the programme runs smoothly.