In lean manufacturing, few practices are as effective—and underused—as the Gemba walk. Derived from the Japanese term for “the real place,” a Gemba walk involves going to the production floor, observing operations firsthand, and engaging with the team. In glass plants, this can be a game-changer.
Start with intentional observation. Before walking the floor, define a focus: Are you investigating furnace cycle times? Examining cullet handling? Observing how operators load lites onto the washer? Having a clear goal ensures your walk is more than just a tour.
Next, engage without disrupting. Ask operators questions like “What’s slowing this step down?” or “If you could change one thing, what would it be?” Frontline employees often have solutions that never reach management—but a Gemba walk gives them a platform.
Document what you see, but skip the clipboard if it makes people nervous. A tablet or even a mental checklist works fine. Focus on things like motion waste (e.g., operators walking back and forth), material handling delays, or tools being shared between stations.
In a glass plant, key Gemba indicators include:
Inconsistent loading/unloading times
Excessive waiting between tempering and IGU assembly
Repetitive handling of lites or packs
Air leaks or heat loss near furnaces
Cullet overflow or misclassification
Another tip: include cross-functional leaders in the walk. Having someone from quality, maintenance, and production walk together fosters shared understanding. It’s not about assigning blame—it’s about seeing problems through different lenses.
Post-walk, follow-up is critical. Even a 15-minute feedback session with the team can reinforce that their input matters. More importantly, act on what you observe. If cullet bins need better labeling or if a washer causes consistent downtime, fix it quickly. Nothing undermines Gemba culture faster than ignoring what was seen.
In an industry where uptime is king and margins are tight, Gemba walks bring visibility, alignment, and immediate wins—all without capital investment.
