The rental house that turns wedding glassware overnight
A glassware rental company sends thousands of glasses out every weekend. Every one comes back needing wash, dry, polish, and re-shelving before the next booking — and hand-polishing was the bottleneck.
Wedding season is a logistics problem: 3,000 glasses out Friday, back Sunday night, and ideally back on the booking sheet by Tuesday. The wash line was fast. The polish line was a crew of part-timers with towels, burning Sunday and Monday.
The eight-brush StemShine GP8 — double the throughput of the GP5 at roughly 700 glasses per hour — turned the polish step into a pass-through. Returns run washer → GP8 → shelf in a single afternoon.
Faster turnaround compounds: the same owned stock covers more bookings per month, weekend labour shrinks, and glasses arrive at the next venue looking new instead of cabinet-dusty. In rental, inventory velocity is revenue.
The math, line by line
Scenario inputs: 3,000 glasses returned per week, $18/hour wage, year-round operation (52 weeks). Hand rate 60 glasses/hour; GP8 rate 700 glasses/hour.
Excludes the revenue upside of faster inventory turns and reduced breakage in handling — both significant in rental.