The moment that caught me off guard is the parting itself. Instead of the cut-off sleeve dropping away into the machine, it walks out held in a receiver mounted on the turret. Watching a finished hollow stepped bushing leave the spindle in the grip of the tooling rather than landing in the chip tray is an odd sight, and a genuinely clever one.
The setup is easy to follow once you trace it through. A small cylindrical workpiece sits clamped in the main spindle chuck, spinning at high speed. A receiver attachment on the multi-station tool turret, lined up with the centre axis, advances forward over the piece. Cutting fluid sprays as the component is cut free, then the turret retracts toward the right side of the enclosure with the parted part still retained. The operator simply lifts the component out of the holder afterwards.
The finished part itself looks tidy: a hollow, stepped sleeve with distinct external turned profiles and grooves, and reportedly burr-free at the break. That is the real payoff here, since a conventional part-off can leave a rough end face that needs extra attention.
Credit to Lewis for being upfront about the limits. The method is not foolproof, and it was only used on five parts rather than a production run. It also exists because the machine lacks a parts catcher, so the turret is doing double duty. One thing left open: the alloy of the finished sleeve never gets identified, and that would matter for how any cut behaves.
Project by Lewis. Watch it on their YouTube channel: