Not every orthopedic implant feature needs five-axis milling. Pins, screws, shafts and other rotational geometry are turning work, and choosing between standard CNC turning and Swiss turning changes what tolerance, size and finish are realistic before the part ever reaches inspection.

Where turning fits in orthopedic implant work

Lab Ready's CNC machining capability covers turning specifically for rotational features — shafts, pins, screws and fixation hardware — alongside 3, 4 and 5-axis milling for more complex geometry. If a feature is round in cross-section and generated by rotating the stock against a cutting tool, it's almost always faster and more repeatable to produce as a turned part than as an equivalent milled feature, since the part stays chucked in one setup instead of being repositioned across multiple axes. That efficiency is why turning is usually the right first question for fixation hardware, even on a job that also needs milled features elsewhere.

CNC turning vs Swiss turning

Both processes fall under the same listed tolerance, ±0.005 mm, for milling and turning work — the choice between standard and Swiss turning is about part size and slenderness, not achievable precision. For the mechanical reason Swiss turning holds that tolerance better on small, slender parts, see Swiss turning vs standard CNC turning.

Material and what comes after turning

Titanium and stainless steel alloys are the standard materials for trauma fixation hardware — plates, screws and external fixation components — and both are available across CNC machining. Titanium Grade 2 and Grade 5 (Ti-6Al-4V) cover most orthopedic implant work more broadly. Threading, drilling, knurling and boring typically round out a turned part, and where a feature needs tighter geometric control than turning alone can hold — a keyed bore, a non-round profile, a hardened bearing surface — EDM or precision grinding picks up that specific feature rather than forcing the whole part through a slower process. Stainless components headed for surgical or implant use often move on to passivation as a finishing step. See the trauma device manufacturing page for the material and process detail specific to fixation hardware.

Engineering Takeaway

Rotational geometry — pins, screws, shafts — is turning work, not milling, because the part stays chucked in one setup instead of being repositioned across axes, which makes it faster and more repeatable. Standard and Swiss turning hold the same ±0.005 mm tolerance; the choice between them comes down to part size and slenderness, not achievable precision. Threading, drilling, knurling and boring typically round out a turned part, with EDM or precision grinding picking up any feature that needs tighter geometric control than turning alone can hold, and stainless components headed for surgical or implant use often move on to passivation afterward.

Getting the tolerance callout right on a turned feature matters more than on most milled geometry, since a shaft or pin diameter directly determines fit against a mating component. If tolerancing a drawing is the current sticking point, the tolerance callout guide covers how to read and set those requirements before sending an RFQ. For the next quote, send the drawing with the critical diameters called out, the material, and the target quantity — Lab Ready will confirm whether it's a turning job, a milling job, or a combination of both.