3 verified machine shops in Dayton, OH do sinker EDM; each fact below links to the sentence on the shop's own site.
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Sinker (ram) EDM burns a shaped electrode into hardened metal to make cavities, blind pockets and features a cutter cannot reach — common in mold and die work.
Ask what electrode materials they use, the surface finish they can burn, and lead time for electrode fabrication. Cavity depth and corner radii drive the cost.
Each shop's verified sinker edm fact is quoted from its own website; open the shop for every other capability on record.
In quantities from prototype to production runs, RB Tool & Manufacturing Company specializes in precision wire and sinker electrical discharge machining (EDM). source
Triangle has both Sinker EDM and Wire EDM capabilities. source
Wire EDM & Ram EDM source
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