Adding Value to Complete Contract Machining with Precision Grinding, Gun Drilling, Broaching, and Wire EDM

Since 1998, MultiSource Manufacturing LLC has supported original equipment manufacturers (OEMs) and other customers in a range of industries with computer numerical control (CNC) machining and expert fabrication work. The prototypes, parts, components, and full assemblies we build meet production needs for precision, material quality, and just-in-time delivery in the medical device, semiconductor, defense and aerospace, financial processing, and food industry. Across our network of six well-equipped facilities, we are able to implement operations from machining with over 140 multi-axis CNC centers to plastic fabrication with polymers like Teflon™ and more. In addition to comprehensive design/build facilities, expert project management systems, and quality materials sourcing, we also provide value-added finishing treatments to parts and assemblies, such as laser marking and heat treatments. If you need contract machining and fabrication services for your components, parts, or assemblies, MultiSource has the staff, equipment, supplies, and facilities to get the job done.

Contract Machining Operations

While a significant part of our contract machining operations relies on the performance of our 3-axis and 5-axis indexed CNC machine centers, Swiss turning machines, lathes, and other programmable, high-powered CNC equipment, our access to supplemental tools also allows us to meet the closest tolerances possible with the greatest accuracy. Some of those supplemental tooling operations include:


We utilize several grinding systems to finish component surfaces and interiors to the exact tolerance required. We can also treat surfaces with powerful grinding systems to create desired cosmetic and functional finishes, use gear grinders to create perfection in high-precision gearing parts, apply center grinders for meticulous shafts, use tumble grinders to reduce imperfections quickly, and implement many other specialized grinders in the machining process.

Gun Drilling:

Fluted straight gun drills utilize cutting fluid to make deep holes into working materials. The cutting fluid provides both cooling and lubrication as the drilling is done. We can apply gun drilling on our mills, lathes, and other machining tools for the best precision possible. With gun drills, we can cut accurate holes with depths over five times their diameters.


Using linear and rotary broaching tools, we can efficiently perform specific cuts when building parts that require asymmetric machining. Toothed broaching cutters are frequently used in manufacturing gear systems, dies, keyways, castings, and more. Broaching allows us to rapidly perform unusual cuts with tolerances as tight as ±0.0005 in (±0.01 mm).

Wire EDM:

Electrical discharge machining (EDM) uses current to remove material from a workpiece in subtractive manufacturing operations. Wire EDM can cut plates up to 11.81 in (300 mm) in thickness with CNC guided programs. These systems are useful in precision-cutting hard metals that would cause unnecessary wear on other machining systems.

Grinding, gun drilling, broaching, and wire EDM are just some of the many supplemental operations we use to complete a fabrication project. For more about our contract machining capabilities, contact MultiSource Manufacturing LLC at (952) 456-5500. You can also request more information or a quote to get started with us today.