Flex Connections: Is a Printed Silver Ink Circuit Right for Your Application?
Flex Connections: Material Selection in Nickel vs. Copper Tabs
Flex Connections: Four Lessons in Engineering Judgment for PCB Designers
As electronics manufacturers, we devote significant effort to the production floor, always seeking to build products better and faster. We measure placement speed, optimize changeovers, monitor yield, and invest in equipment. Those investments matter. But in many high-mix and new product introduction (NPI) environments, the greatest opportunity to shorten lead time sits between the customer order and the start of production.
I call this the Messy Middle. It is the period when a quoted job becomes a buildable job. During this time, the bill of materials changes: alternates are added, quantities shift, purchase decisions are made, and customer-supplied material arrives. Parts must be received, stored, allocated, and picked. Through it all, questions arise and pass between program management, purchasing, receiving, the customer, and the shop floor.
Every one of those activities is necessary. The problem is that they are often managed across email, spreadsheets, shared drives, handwritten notes, and the memories of a few experienced people. Information is lost, and mistakes are made. Lead time slips away as teams work through the problems of the Messy Middle. Because so much of that time is lost before production even begins, preproduction is one of the best places to win it back.
Where Status Goes to Hide
The Messy Middle begins as soon as reality moves away from the quote. A customer releases an order, but the production BOM differs from the quoted BOM. Perhaps a distributor substitutes a different package, or customer-supplied material arrives from a different manufacturer than expected. A promised shipment arrives in three boxes instead of one. A part appears on the packing slip, but the carton contains something else. Another part is physically in the building but awaiting inspection, so it has been received but is not yet usable.
To continue reading this article, which appeared in the November 2026 edition of SMT007 Magazine, click here.
