SOURCING WORKSHEET / FIRST ORDER
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A wire edm machine for sale listing is useful only after the application is written: which jobs change over, whether the quoted machine can thread and recover on the actual workpiece, and which upstream start-hole or downstream inspection interfaces must stay in the same brief. This page is not a stock board. Adjacent milling or sinker EDM remains a separate inquiry even when they share the same crane.
Confirm how parts arrive: pre-drilled start holes, heat-treatment state and whether fixtures stay on the table between jobs. If several thicknesses share one tank, ask whether wire diameter, flushing and skim-pass count change with each lot. Work envelope and workpiece mass must cover the heaviest and tallest piece, not the brochure sample. Cooling water and deionized-water makeup should be sized for the longest submerged duty, not a short demo cut.
Ask whether automatic threading recovers on the actual thickness after a break, and which PLC interface reports wire-break, tank level and filter differential. Changeover time is not cycle time. A factory that quotes only a maximum cutting speed without stating wire diameter, number of skim passes and inspection method is answering a different question than a shop that must switch jobs twice a shift. See threading and dielectric service.
After the cut, confirm how parts leave the tank, how spent wire is collected and who measures the first-good piece. Upstream start-hole drilling and downstream CMM or optical inspection must be named if they constrain table access. Representative production samples should travel with the RFQ so factories do not substitute a coupon that threads more easily than the production blank.