Ask a quench hand how he can tell a ploughshare is done; it looks right, he says. He means a straw tint fading to bronze, a hiss in the oil, a count he keeps without noticing. Ask a winder how snug the turns should sit and he presses a coil with his thumb. Ask the senior fitter on a rotavator line why a gearbox mount needs a shim, and he shrugs and fits one.
Our agri equipment overview names this as its second pattern: craft passed from eye to eye that never reaches paper. In tractor attachment units the same gap quietly pushes good welders out.
Where the unwritten craft hides
- Edge hardening: reading temper tints on tines, discs and shares, and timing the plunge into the quench tank.
- Weld finish: puddle control, root penetration on thick drawbar plate and no undercut beside the hitch bracket.
- Stator winding: how many turns each coil takes, the wire size, slot packing and the varnish dip on pump motors.
- Die setting: shimming press tools and centring an extrusion die so the opening metres are saleable.
- Linkage fit: three-point hitch spacing and PTO shaft alignment on attachments that must couple first time.
What happens the month that person is away
Rejects climb within weeks. Tines fold in black cotton soil because the temper went soft. Drip tape runs thin on one flank after a die change. Submersible stators burn early. The owner hears from dealers, usually mid-season, and the floor cannot name what changed.
The welding side is subtler. A capable welder at a tractor attachment shop absorbs frame tricks from the senior man over years. If nobody recognises that apprenticeship, he carries it to a neighbouring unit that pays a little more and treats him as a finished tradesman.
Why the habit survives
Senior hands are stretched, and teaching belongs to nobody's job. Most were taught by watching, so they teach the same way, if at all. Owners assume the knowledge will always be there because it always has been. And wages rarely separate the man who can judge a quench from the man who loads the furnace.
Pinning the craft down in six steps
- 1
Name the judgement points
Walk each shed with the supervisor and list every task where the outcome hangs on one person's eye or touch. Keep it short and candid.
- 2
Put holder and learner in two columns
Against every point, note who holds it today and who learns it next. An empty learner column is the risk, in plain sight.
- 3
Make photo cards
Photograph good and bad examples: temper tints, weld beads, slot packing, the first extruded metres. Add a line or two in the local language and pin them at the station.
- 4
Pair them on real jobs
The holder narrates while the learner does the task. Begin with scrap or low-risk parts, then move to dealer orders.
- 5
Sign off by doing
The learner completes the task three times unaided, the holder signs, and the skill matrix records it.
- 6
Reward both people
A modest teaching allowance for the holder, and a step up the grade ladder once the learner is signed off. Without them, both lose interest by the second month.
Our learning and development support turns the cards and sign-offs into a routine, and our free skill grid for agri equipment shops gives you a grid to record them.
Timing matters as much as method. Start in the slack months, when the forge is cool and the extruder runs a single shift. A learner who practises on scrap shares during the monsoon lull is ready by the pre-sowing rush. Leave it to the rush and the holder has no time, the learner has no patience and the photo cards gather dust in a drawer.
Four questions before you start
- Which tasks stalled the last time a senior hand took leave?
- Which rejects or dealer complaints trace back to one station?
- Who has a learner at their elbow today, and who works alone?
- Do your best welders know the wage attached to the grade above theirs?
Holding on to welders in tractor attachment units
Welders stay longer when their learning is visible. Put their sign-offs on the matrix where they can see them. Tie a grade to drawbar and hitch bracket work, not only to years served. Let the senior welder choose his learner and credit him when that learner passes. The tractor attachment makers page sets out the wider reasons welders there move so easily.
Pages for forge shops and pump units
Forge and quench skills get a fuller treatment on the forge and quench training notes for implement shops. Winding and test bay craft have their own winding and test bay training notes.
