Nickel superalloys punish careless machining. They work-harden fast, they hold heat at the cutting edge because the thermal conductivity is poor, and tool wear runs high enough that an unmanaged process drifts out of tolerance inside a single component. Push too hard and you leave residual stress or surface damage in a part that has to survive an engine.

We cut this large-diameter ring on vertical turning lathe equipment sized for the envelope, and controlled the process to hold 0.1 mm. Dimensional verification ran against a digital height master with 0.0001 mm resolution, backed by a full bore-gauge suite. The part shipped on the promised date and met every dimensional and quality requirement.

Titanium gives you the strength-to-weight ratio the airframe wants and a machining problem in return. Cutting forces are high, the heat has nowhere to go, and the material work-hardens the moment tool wear goes unmanaged. Machining all six faces of a block to 0.05 mm means every setup has to agree with the one before it.

The job ran on VMC milling with titanium-specific tooling selected for the material rather than adapted to it. Positional tolerance held to 0.1 mm across all six machined faces, with the component itself held to 0.05 mm and verified on calibrated high-precision instruments. On time, to print.

SS316L earns its place in marine and aerospace work on corrosion resistance. It also work-hardens during machining, which makes holding tight hole tolerances across a thin 16 mm plate section a test of process control rather than of horsepower.

We held the hole tolerance to 0.1 mm on VMC machining and inspected with plain plug gauges, the right instrument for the feature. The parts arrived two days ahead of schedule and to full specification. That customer has been placing repeat orders since.

This one came from a tier-one aero engine OEM. A 458 mm outside diameter ring in Nickel 263 with groove width and profile tolerances close enough that groove depth and profile geometry had to be proved on a CMM rather than assumed from the machine. Perpendicularity, circularity and parallelism all sat inside the profile requirement.

Turned on a CNC turning centre, held to 0.5 mm overall with the groove profile verified on CMM. Delivered on the date we quoted.

A milestone job for this shop, and the one we are most willing to be judged on. An eccentric 350 mm diameter back plate for an MRI scanner, in SS316L, with tight profile and hole tolerances to hold across the part. Eccentric geometry means a large tooling and fixture count, and every extra fixture is another chance to lose datum.

Eight machines ran across the job on CNC turning centres, holding 0.2 mm. The rejection rate came in at 0.3 percent. The customer has been reordering since.