Custom Aluminum Fabrication & CNC Machining Services - Custom Metal Fabrication Project Portfolio

Pen Manufacturing provides precision aluminum fabrication, aluminum sheet metal fabrication, and CNC machining services for OEMs, engineers, and procurement teams across the United States. From our AS9100- and ISO 9001-certified facility in Anaheim, California, we cut, form, machine, weld, finish, and assemble custom aluminum components — from a single prototype to scalable high-volume production.

For over 30 years we have worked with aluminum and specifically with the innovative and evolving technologies that accompany the changes in the manufacturing technologies we have acquired. With precision and innovation, we have become a true competitor in our region and the nation.

That experience shows up where it matters most: tight tolerances, clean welds, consistent finishes, and on-time delivery. Ready to move your project forward? Get a Quote and upload your CAD files today.

Aluminum fabrication is the process of transforming raw aluminum sheet, plate, bar, or extrusion into finished parts through cutting, punching, forming, CNC machining, welding, and finishing. Because aluminum is lightweight, corrosion resistant, and easy to machine, fabricated aluminum components are widely used in aerospace, defense, electronics, medical devices, and industrial equipment.

At Pen Manufacturing, every one of those processes happens under one roof. Single-source aluminum products manufacturing means fewer vendors to manage, tighter control over tolerances, and shorter lead times for your program.

Our aluminum sheet metal fabrication services cover precision cutting, CNC punching, press-brake forming, hardware insertion, and welding. We regularly form 5052-H32 and 6061 sheets into enclosures, chassis, panels, brackets, and housings that hold consistent bend angles and hole positions from the first part to the thousandth.

Aluminum sheet fabrication is often the fastest, most cost-effective path to a lightweight, corrosion-resistant part. Our team helps you design for manufacturability early — adjusting bend radii, flange lengths, and hardware selection before production — so your parts arrive right the first time.

For components that demand tighter tolerances and complex geometry, our aluminum CNC machining capabilities include CNC milling and turning of grades such as 6061-T6 and 7075. Aluminum's excellent machinability allows fast cycle times and fine surface finishes, which keeps per-part costs competitive at every volume.

As a full aluminum CNC service provider, we machine one-off prototypes, fixtures, and production runs alike — and we verify critical dimensions on calibrated Keyence CMM equipment before anything ships. If your part combines machined features with formed sheet metal, we handle both, eliminating the coordination risk of splitting work between shops.