behinder

A behinder is a foundry or metalworking shop worker positioned between the doubler machine and the rollerman. The doubler folds heated sheet metal, usually mild steel or iron, into multiple thicknesses; the behinder receives these folded sheets and feeds them back to the rollerman, who reduces the package through a series of passes on a rolling mill. The behinder is the physical link in a three-person workflow that was standard in forging shops from the nineteenth century into the mid-twentieth century.

The behinder's job sits between heavy handling and skilled observation. Sheet packages emerge from the doubler hot enough that tongs or a heat-resistant carrier is essential. The behinder must read the metal's colour and condition, control placement to ensure even feeding into the mill rollers, and work at the pace set by both the doubler operator upstream and the rollerman downstream. Timing is critical: too slow a feed creates bottleneck and heat loss; too fast invites bunching or crushing inside the rollers.

The name reflects the spatial arrangement of the mill floor. The behinder stands behind the doubler (from the perspective of material flow) and passes sheets back toward the rollers, effectively reversing direction before they proceed forward again through the mill itself. In some shops the role was called a passer or simply a mill hand, but behinder was precise enough to appear in trade payroll records and apprenticeship agreements.

Modern automated mills have eliminated this position almost entirely. Mechanical arms, conveyor systems, and computer-controlled timing removed the need for manual handoff between stations. Visitors to operating historic ironworks or museum demonstrations of nineteenth-century metalworking may still see behinders at work, usually as part of living-history crews or in shops specialising in period techniques for heritage or bespoke products.