Custom CNC Turning & Milling Services of Metal & Plastic Parts

Gem Manufacturing provides precision CNC turning and milling services in our state of the art facility in Waterbury, Connecticut. Delivering fast, two to four week turnaround on prototype to low-volume production of both plastic and metal components.

Experienced at machining many materials, including aluminum, titanium, acrylic, and nylon, we can produce parts as large as 40″ x 20″ x 17.7″ with diameters up to 14.57″. Milling operations are also equipped to handle parts weighing up to 1,500 lbs.

Widely used by the aerospace and medical industries, our CNC turning and milling services are capable of accuracies within ± .0005″. Quality is important to us, and our ISO 9001 accreditation confirms our commitment to delivering the best results possible. We also provide many secondary services, such as plating, anodizing, and heat-treating for start-to-finish part production. Contact us today to learn more.

Precision CNC Turning and Milling Capabilities

Tolerances

± .0005 in.

Part Diameter

Max: 14.570 in. 370.078 mm

Max: (Bar) 2.750 in. 69.85 mm

Part Length

Max: (Turning) 19 in. 482.6 mm

Max: (Milling) 40 in. 1016 mm

Part WidthMax: 20 in. / 508 mm
Part Height

Max: 17.7 in. / 449.58 mm

Maximum Part Weight1,500 lbs. (Milling)
Machining Processes
  • Parting/Cutting
  • Facing
  • Turning:
    • Contour Turning
    • Form Turning
    • Taper Turning
    • Straight Turning
  • Threading
    • External
    • Internal
  • Internal Forming
  • Knurling
  • Boring
  • Drilling
  • Counterboring
  • Countersinking
  • Pocketing
  • Profiling
  • Reaming
  • Tapping
  • Thread Milling
Materials (Metals)
  • Alloy Steels
  • Aluminum
  • Brass
  • Bronze Alloys
  • Carbon Steel
  • Copper
  • High Speed Steel (HSS)
  • Stainless Steel
  • Titanium
Materials (Plastic Polymers)
  • Acrylic
  • Delrin
  • Glass Filled Plastics
  • Nylon
  • PEEK
  • Phenolic
  • PTFE
Fixturing
  • Three-jaw chuck
  • In-House Fixturing & Tooling
Equipment Capabilities
  • CNC Control Capabilities
  • CAM Programming
Machinery Axis
  • 3-axis (Milling)
  • 2-axis (Turning)
Production Volume

Min: 1 Unit

  • Prototype
  • Low Volume
  • Mid Volume

Max: 5,000 Units

Lead Times Available

Average: 2 – 4 weeks

  • Quoted on job by job basis
  • Expedited services available
Secondary Services Offered
  • Light Mechanical Assembly
  • Finishing
    • Masking
    • Plating
    • Deburring
    • Chem-Film Coating
    • Anodizing
    • Passivation
    • Heat Treatment
Industry Focus
  • Aerospace
  • Commercial
  • Marine
  • Medical
  • Military/Mil-Spec
  • Mining
  • Sporting Goods
  • Tool & Die

Industry Standards

  • ANAB Accredited
  • ANSI-ASQ National Accreditation Board
  • ANSI
  • American National Standards Institute
  • ASME
  • American Society of Mechanical Engineers
  • ASTM
  • American Society for Testing and Materials
  • DFARS
  • Defense Acquisition Regulations System
  • ISO
  • International Organization for Standardization
    • ISO 9001:2008
  • Mil-Spec
  • Military Specifications
  • RoHS
  • Restriction Of Hazardous Substances (Compliant)
  • SAE
  • Society of Automotive Engineers

File Formats

  • AutoCAD (DWG,DXF)
  • BMP
  • Bit Mapped Graphics
  • GIF
  • Graphics Interchange Format
  • IGES
  • Initial Graphics Exchange Specification, ANSI file format.
  • JPG or JEPG
  • Joint Photographic Experts Group
  • MasterCam (MDX, MC8, MC9, SET)
  • PDF
  • Portable Document Format
  • SolidWorks (SLDPRT,SLDDRW,SLDDRT)
  • TIFF
  • Tagged Image File Format