METAL SPINNING

Metal Spinning

Metal Spinning

Metal spinning is a precise forming process used to create hollow, symmetrical parts — most often circular in cross-section — by rotating a flat metal disc, known as a blank, at high speed on a lathe. As the blank spins, it is carefully pressed against a shaped tool or chuck mandrel that defines the interior contour of the finished part.

This controlled pressure gradually transforms the flat blank into a smooth, seamless three-dimensional shape without removing any material, ensuring strength, durability, and an excellent surface finish.

The most common shapes produced through metal spinning include hemispheres, cones, cylinders, bells, domes, and venturis. However, the process allows for endless customization — from simple geometric forms to complex, contoured profiles.

Metal spinning is valued for its cost efficiency, short lead times, and high material utilization, making it ideal for both prototype development and production runs. It is frequently used in architectural, lighting, decorative, and industrial applications where strength, precision, and aesthetic appeal are essential.

Typical metals used in the spinning process include copper, brass, aluminum, stainless steel, and zinc-coated steel, allowing for both structural and ornamental uses.

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Why Choose PJ Metal Craft?

Precision & Consistency

Each component is formed with attention to symmetry, proportion, and finish quality.

Each spun finial component is then hand-finished, detailed, and assembled to meet exact architectural requirements. Whether for historic replication or contemporary design, metal spinning enables us to achieve refined shapes that elevate the finished structure.

Architectural Expertise

We understand roofing, ornamental fabrication, and historical detailing — allowing us to produce components that integrate correctly into the final assembly.

Landmark Restoration Experience

We specialize in custom architectural and historical replication work using:

  • scans
  • templates
  • reverse engineering
  • custom tooling

Why metal spinning is ideal for finials:

  • Creates smooth, seamless forms with no visible joints

  • Ensures perfect symmetry and balance

  • Allows for custom profiles and proportions

  • Produces strong, lightweight components

  • Ideal for copper, zinc, and lead-coated copper