How do I reduce dependence on one or two setters?

Write down what each setter actually does. Attach one pupil to each setter for a fixed stretch, on live jobs. Record every setup while the pupil picks it up, in a logbook that stays at the lathe. Move decisions across in stages, and pay the setter for teaching. The hub for lathe, milling and grinding shops gives this answer in a few lines. It works faster than recruiting, because a newcomer brings his own habits and soon keeps his own jobs in memory.

Below, the method is worked through for a turning floor. Four follow-up questions from owners are answered after it.

Ask the setter to talk you through a normal week, or follow him for a day with a notebook. On a lathe floor the list usually includes these.

• Chooses soft jaws or collets, mounts them and bores them true for each casting or forging.
• Sets chuck pressure so thin-wall sleeves do not go oval.
• Aligns the tailstock quill and live centre, and places a steady rest under long shafts.
• Loads turret stations, touches off each tool and keys in the offsets.
• Adjusts the bar puller, part catcher and parting-off position on bar-fed work.
• Edits the program when a drawing revision arrives: a new chamfer, a deeper groove, a changed thread pitch.
• Proves the first piece and decides whether it is good.
• Cures chatter, taper, torn finish and knurling or threading trouble mid-run.

Mark each item in one of three ways. An operator could pick it up in days. A pupil could master it in weeks. Or it needs months beside the setter. That sorting is your plan.

1. 1

   Weeks one and two: observe and write

   The pupil stands at every changeover and fills the logbook entry. The setter reads it before going home and corrects anything missing.

2. 2

   Weeks three to six: hands on, setter beside

   The pupil performs the changeover with the setter at his elbow. Begin with repeat parts on familiar jaws and proven programs.

3. 3

   Weeks seven to ten: alone, inspected afterwards

   The pupil sets repeat jobs unaided. The setter gauges the first piece and checks the offset page before the batch runs.

4. 4

   Weeks eleven to thirteen: own a shift

   The pupil handles every changeover on one shift, with the setter reachable by phone. Each call gets noted, since each one marks a remaining gap.

5. 5

   After that: sign off, then go harder

   Sign off the tasks now done unaided. Then begin on the difficult pile: new parts, revisions and the jobs with knurls, fine threads or deep bores.

Drawing, with the current revision marked and superseded copies taken off the floor.
Turret station map: which tool sits in which station, with holder and stick-out.
Tool list giving insert grade, nose radius and chipbreaker for each tool.
Workholding: jaw type, bored diameter, collet size and chuck pressure.
Photos of the work offset and tool offset pages taken after a good first piece.
Bar length, bar puller setting and parting-off position, where bar-fed.
First-piece checks: which features, which gauges, who approves.
Known troubles and cures, such as chatter from boring bar overhang or a burr where a cross-hole meets the bore.

He may, at first. Many setters guard knowledge because it is their bargaining power, much as an old ustad once kept his best tricks from the shagird. Say plainly that his place is safe and that teaching is now part of what he is paid for. Give him a senior title, and count each sign-off he produces in his review. A setter who gains standing from teaching stops treating changeovers as private property.

Recruit if the floor genuinely lacks hands. On its own, though, a recruit does not reduce dependence; it doubles it. The newcomer learns your jobs from the existing setter, or never learns them, and soon carries his own share in memory. Pupils plus logbooks are what move knowledge from people to the shop.

Some, for a while. Changeovers run slower when one person is teaching another, and the setter loses odd hours. Weigh that against the shifts lost each time the setter is on leave, unwell or tied up on another lathe. Most owners find the trade obvious once they total the waiting.

That risk is real. Tie each batch of signed-off tasks to a grade move and a matching pay step, so the pupil gains from staying. The logbook stays even if he goes, so the next pupil starts from paper rather than from nothing.

Give every setter named cover, the way succession planning treats any critical role. Moving lathe operators towards setting is covered on the turning shop learning page. Logbooks are documentation, and the milling shop documentation page explains keeping such records current. For costs and causes in depth, read the longer pattern piece on setter dependence.