Inside B&B Precision Wire EDM, Inc.: A Wire EDM Precision Shop Built on Precision and Pride
The hum of a wire EDM machine is a particular kind of quiet. Not the clang and crash of a stamping press or the roar of a mill cutting steel at full depth — it's a focused, deliberate sound. A thin strand of brass wire, no thicker than a human hair, traces a programmed path through hardened tool steel with tolerances measured in tenths. In a shop like B&B Precision Wire EDM, Inc. in Forest Hill, Maryland, that sound is the heartbeat of the place. It's the sound of work being done right.
Founded in 1994 by brothers Bud and Bob Knell, B&B has operated for three decades as a family-run precision shop on the outskirts of the Baltimore metro corridor. The shop isn't chasing headlines or building a brand on social media. What they're building are precision die and mold components, extrusion dies, RF housings, cams, keyways, and custom fixtures — work that demands consistency, patience, and hard-won expertise in a process that punishes carelessness and rewards discipline.
What EDM Actually Is — And Why It Matters
Electrical Discharge Machining is still misunderstood by people who haven't needed it. The short version: EDM uses controlled electrical sparks to erode material with extreme precision, without ever applying cutting force to the workpiece. That matters enormously when you're working with hardened steels, exotic alloys, or geometries that no conventional cutting tool can reach.
Wire EDM draws a conductive wire through a submerged workpiece, cutting complex 2D profiles and tapers with almost no mechanical stress on the material. RAM or Sinker EDM plunges a shaped electrode into the workpiece to create cavities, pockets, and intricate recesses — the kind of features you find in injection molds and die casting tooling. Small Hole EDM drills starter holes in hardened material where conventional drilling would fail or deflect.
B&B runs all three. That's not common. Many EDM shops specialize in one process. Operating wire, sinker, and small hole EDM under one roof — alongside CNC milling and grinding — means a single vendor can take a job from raw stock to finished precision component without handing it off. For procurement teams managing supplier count and lead times, that's a meaningful operational advantage.
The Work They Do
Spend any time reviewing what comes off the machines at a shop like B&B, and you get a clear picture of who needs them. Precision die and mold tooling is bread-and-butter work — inserts, cavities, and cores that have to hold tolerance across thousands of production cycles. Extrusion dies require profiles cut to exact geometry; a few tenths off and the extruded profile drifts. RF housings — enclosures for radio frequency applications — demand tight dimensional control and clean surface finishes. Cams, keyways, and custom fixtures round out the portfolio, the kind of workhorse components that keep production lines running.
This is not a shop taking on high-volume commodity work. The value B&B delivers is in the difficult stuff — hardened material, complex geometry, tight tolerances, and the kind of application knowledge that only comes from decades of working through problems with customers who can't afford to be wrong.
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Federal Work and ITAR Certification
One detail that separates B&B from a lot of regional precision shops is their standing as a US Federal Contractor with ITAR certification. The International Traffic in Arms Regulations govern the manufacture and export of defense-related articles and services. Holding ITAR certification means B&B has cleared the compliance bar required to work on defense and federal programs — a non-trivial undertaking for a small shop.
For defense primes, government contractors, and federal agencies sourcing precision tooling and machined components, this matters. It narrows the qualified vendor pool considerably, and B&B is in it. Procurement officers working in regulated supply chains should note this when evaluating sourcing options in the Mid-Atlantic region.
What Makes This Shop Different
Three things stand out about B&B Precision Wire EDM after you look past the equipment list.
First, longevity and ownership continuity. Bud and Bob Knell founded this shop in 1994 and it remains family-run. That kind of ownership structure tends to produce a particular culture — one where the reputation of the shop is personal, where a bad part isn't just a quality escape but something that reflects on the family name. That's not sentiment; it's accountability baked into the org chart.
Second, process breadth under one roof. Wire EDM, sinker EDM, small hole EDM, milling, and grinding in one facility means your job doesn't get handed off between vendors. Fewer hand-offs mean tighter control, cleaner communication, and less opportunity for tolerance stack-up or scheduling gaps. For a manufacturing engineer managing a complex tooling project, that matters.
Third, 30 years of application knowledge. Equipment can be bought. The knowledge of how to set up a sinker EDM job on a tricky mold cavity, or how to hold a tight taper on an extrusion die profile, or how to sequence a grinding and EDM operation to hit final print — that accumulates over decades, not years. A shop that has been doing this work since 1994 has seen a lot of problems and solved most of them before.
Procurement managers and sourcing engineers looking for a qualified EDM vendor in the Mid-Atlantic should review their full capabilities listing at Visit B&B Precision Wire EDM, Inc. — the site provides a clear overview of equipment, processes, and contact information for quoting.
About B&B Precision Wire EDM, Inc.
- Founded: 1994
- Founders: Bud and Bob Knell
- Location: Forest Hill, Maryland
- Employees: Small team, approximately 5–50
- Processes: Wire EDM, RAM/Sinker EDM, Small Hole EDM, CNC Milling, Grinding
- Products: Precision die and mold tooling, extrusion dies, RF housings, cams, keyways, custom fixtures
- Certifications: US Federal Contractor Registration, ITAR Certified
- Business Structure: Family-owned and operated
Where to Find Them
B&B Precision Wire EDM, Inc. is located in Forest Hill, Maryland, in the Baltimore–Harford County corridor — well-positioned to serve aerospace, defense, industrial, and commercial customers across the Mid-Atlantic and beyond.
For quoting, capability questions, or to learn more about their EDM and machining services, visit them directly at Visit B&B Precision Wire EDM, Inc..
This is the kind of shop American manufacturing runs on — not flashy, not loud, just three decades of precision work done right by people who put their name on it.
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