CNC Milling

Twin City EDM provides comprehensive precision CNC milling services to customers in the medical, surgical, aerospace, and defense industries. Our capabilities include, but are not limited to, boring, knurling, milling, turning, broaching, deep hole drilling, hard milling, hobbing, and shaping. Finish machining capabilities include deburring, grinding and polishing.

We can mill parts up to 44″ x 20.5″ x 20.5″ with tolerances as tight as ±.0001″ and a repeatability of ±.00008″. Our experienced staff can expertly mill a range of materials including steel, stainless steel, aluminum, brass, nickel, rubber polymers, plastics, ceramics, graphite, and composites. The use of advanced multi axis milling machinery enables us to work with a wide range of materials successfully.

General Capabilities
Tool Paths, Boring, Deburring, Drilling, Grinding, Knurling, Milling, Polishing, Reaming, Turning, CNC Machining (OEM Parts)
Special Capabilities
Broaching, Deep Hole Drilling, Hard Milling, Hobbing, Shaping, Slotting
Threading Process
External Thread Cutting, Internal Thread Cutting, Tapping, Thread Milling, Single Point Threading
Machinery Axis
Equipment Capabilities
RS232C Interface, CNC Control, Vertical and 5 axis Machining Centers, Full 5 axis, Large Tool Magazines, Verticals with 4th Axis, Touch Probes, Automatic Tool Length Measurement Systems
Automation Capabilities
High Speed Machining, Automated Part Feeding
Metal Materials
Stainless Steel, Aluminum, Titanium, Brass, Nickel, Dual Steel
Rubber Polymer Materials
Natural Rubber, Polyurethane, Silicon, Thermoplastic Elastomers, Thermoset Elastomers
Other Materials
Plastic, Ceramic, Delrin, Graphite, Conductible Composite
Spindle Speed
0 to 40,000 rpm
0 to 44 Inch
0 to 20.5 Inch
0 to 20.5 Inch
0 to 1,000 lb
Standard Feed Rates
1418 ipm (X, Y), 945 ipm (Z)
Table Positioning (+/-)
0.0001 Inch
Repeatability (+/-)
0.00008 Inch
Zeiss Coordinate Measuring Machine (CMM with Scaning Head), QPM Vision Systems
Pull, Mag Particle, Pressure, Quality Assurance Program
Production Volume
Prototype to High Volume Production
Typical Lead Time
2 to 3 Weeks
Lights Out Manufacturing, Lean Manufacturing, Robotic Cells
Industries Served
Medical, Surgical, Aircraft, Aerospace, Defense
Industry Standards Met
ASTM 485, MIL-W-13855, MIL-L-45208A, MIL-Q-9858A, ISO 13485:2016 Certified, ISO 9001:2015 Certified, ITAR Compliant, RoHS Compliant
File Formats Accepted
SolidWorks, IGUS, XB, STP, PRT, AutoCADMaster, CAM Part Maker

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