What We Do

GMMCO manufactures custom metal components based on customer drawings. Customers from dozens of different industries and backgrounds submit blueprints of their parts that they need manufactured to GMMCO. We in turn machine these parts exactly to print in our facility.

CNC Machining Overview

GMMCO specializes in precision CNC lathe turned parts for a multitude of different industries. Our niche is round metal parts from 0.500” to 5” diameter. Our shop features 4 and 5 axis CNC machining turning centers, including twin spindle lathes with live tooling. Many of our lathes include y-axis capabilities. Our impressive, well equipped CNC machines allow us to manufacture unique parts with difficult and intricate features.

Tight Tolerance Machining

GMMCO possesses tight tolerance machining capabilities, including:

• Straightness: +/- 0.001

• Concentricity: +/- 0.001

• Diameter (inner/outer): +/- 0.001 in.

• Length: +/- 0.001 in.

Machining Capabilities

Our machining process capabilities include:

• Parting/Cutting

• Facing

• Turning

  • Contour Turning, Form Turning, Taper Turning, Straight Turning

• Threading

• Internal Forming

• Knurling

• Boring

• Drilling

• Counter-boring

• Countersinking

• Pocketing

• Profiling

• Reaming

• Tapping

• Thread Milling

Secondary Processing Capabilities

GMMCO has many different secondary processing capabilities and expertise, including milling, polishing, and a wide array of outside processes. Please see our “Secondary Processing” page to learn more!