Make-ready waste follows the minder: HR for offset printing presses

Two minders, same four-colour press, same job: a folder cover on art board with a heavy solid blue. The senior hand sets ink keys from memory and nudges the side lay. He trims the dampening and holds the OK sheet under the viewing booth before the chai arrives. The junior chases a scumming plate, then a hickey, then a colour that will not settle. By the time he gets approval, a pile of spoiled sheets sits beside the delivery.

That spoiled stack heads the list of strains on our offset presses page. It also explains why our print sector overview treats the minder as the quality gate for the whole job ticket.

Make-ready means the setting-up between jobs. Plates are punched and hung, blanket and packing checked, ink and water balanced, register pulled in and colour brought to proof. A good minder does several of these in parallel and by feel. He reads the sheet, the rollers and the hum of the cylinders. Almost none of it lives on paper.

• Pre-setting ink duct keys from the plate image and the stock, before the first pull.
• Finding the narrow window between too much fountain solution and emulsified ink.
• Trimming front lay, side lay and gripper margin so register holds across the run.
• Spotting slur, doubling or ghosting and knowing whether the cause is blanket, packing or rollers.
• Reading solid density and dot gain on the colour bar against the customer's proof.
• Knowing when a board or uncoated sheet needs a different start point from art paper.

Each extra pull eats board the job was costed on, plus ink. It also eats minutes on a press that must run two or three shifts to earn its keep. Overs allowances are set assuming a capable minder. When a weaker hand runs the night shift, the overs vanish into make-ready, and the job comes up short at the guillotine. Then the run restarts, or the customer gets a reduced count and an apology.

The senior minder in most presses learned from an older hand who has since retired or left. That handover happened by chance, over years. Today's feeders and second hands are kept busy washing up, loading the feeder pile and carrying reams. Nobody hands them the ink keys, because the press is always late and the minder is always needed.

Minders sometimes hold back too. Teaching a younger man the colour feel can look like training your own replacement. Unless the owner shows the senior where he goes next, sharing stays risky for him.

1. 1

   Rung one: feeder

   Loads the pile, sets the feeder head and sheet separation, washes blankets and rollers. Signed off when the feed runs a full shift without double sheets or misfeeds.

2. 2

   Rung two: second hand

   Hangs and punches plates, changes blankets and packing, runs wash-up and roller stripe checks. The minder signs off once he has watched enough clean plate changes.

3. 3

   Rung three: junior minder

   Runs make-ready on repeat jobs and simple stocks with the senior watching, then alone on day shift. Learns ink keys, dampening and lay adjustment.

4. 4

   Rung four: minder

   Runs any job, any stock, any shift, approves the OK sheet and signs off second hands. Teaching is written into the role.

Each rung should carry its own pay step, visible to the press room. Read offset press pay benchmarking to price each rung against nearby printers. The training route for offset crews covers sign-off in more detail.

A simple sheet on the press records job type, stock, number of make-ready pulls and who ran it. Over a month, patterns appear. The junior may be quick on uncoated work and slow on heavy solids. That is a coaching note, not a verdict. Review the sheet privately with each person, and never post it on the board as a league table.

Date: ______  Shift: ______  Press: ______.
Job no: ______  Stock and weight: ______  Colours: ______.
Ran by: ______  Second hand: ______.
Make-ready pulls to OK sheet: ______.
Main trouble: register / water balance / colour / blanket / feed / none.
Senior present: yes / no  Coaching note: ______.
Spoilage beyond overs at guillotine: yes / no.

Presses run long and late, and the minder is usually the one kept back. Tired minders make slower make-readies and miss plate wear. A roster that spreads late jobs across trained minders, and rest after a night run, protects both the man and the job. See rostering offset press crews for the detail. Blanket wash, roller handling and solvent rags bring health habits too, set out under offset press health and safety.

Ask your senior minder to name the one second hand he would hand tomorrow's make-ready to. Then ask what that person still cannot do. Those gaps are the training plan. Naming a successor before the senior goes is covered in succession in print and paper units. To talk it through with us, sketch your press room on the brief form.