Prof. Howard Weiss, retired from Temple U., illustrates his wide range of interests.
Martin is a guitar manufacturer that began operations in 1833. Martin specializes in acoustic guitars which account for about half as many guitars as electric guitars in the global guitar market. It is one of the most popular brands along with Fender, Gibson, Yamaha, Ibanez and Taylor.
Location: Martin began its operation in Manhattan. In 1839 Martin opened a plant in Nazareth PA, 90 miles due west of its NYC plant. In 1989 Martin opened a plant in Sonora, Mexico in order to make guitars that were more affordable. It is worth noting that two of Martin’s competitors, Fender and Taylor guitars also have plants in Mexico. These guitars are commonly referred to as MIM (Made in Mexico). See Ch.8.
Capacity: Martin has made over 3 million guitars since its inception, including one million since 2016. It currently produces a total of 500 guitars per day, 6 days per week, at the two plants. (See Supp. 7)
Forecasting: Clearly demand has been increasing. Martin’s forecasting needs to consider historical and causal analysis (see Ch. 4) since certain events can spike or drop the sales. For example, sales increased more than usual during the folk music craze and also when MTV was running its Unplugged series (featuring acoustic guitars). At first, COVID caused a decline in sales due to cancelled concerts and closed stores. But then there was an increase in demand, especially for beginner guitars since people were looking for activities while at home and could order guitars online.
Supply Chain: The supply chain (Ch. 11) begins in the forest and at the lumber facilities both in the U.S. and India.
Layout: Martin uses process layout–see Ch.7. Most of the work is done by hand but there are robots in the factory.
Safety: With all of the woodwork that is being performed the major safety concern is that of sawdust.
Quality Control: The incoming wood is inspected by humans because machines cannot pick up defects in the wood. Each guitar is checked for tone. The guitar gets put in a case, but then sits for 4 days and then undergoes rigorous testing to make certain the guitar parts, e.g. neck, bridge, tuning pegs, still work. (See Ch. 6).
Classroom Discussion Questions
- How could Martin use the Quality Control techniques discussed in Ch. 6 of your text book?
- What are some possible reasons Martin relocated from Manhattan to Nazareth, PA?
In this chapter, we have suggested that building quality into a process and its people is difficult. In the old days, inspection was the main form of quality control. But inspection may not catch all the errors, and it may be expensive. To indicate just how difficult inspections can be, ask your students to turn to the OM in Action box on page 234, called “Inspecting the Boeing 787”.
Prof. Howard Weiss, retired from Temple U., shares his thoughts monthly.
Ford just recalled 850,000 pickup trucks and SUVs because of a potential fuel-pump failure. A bad fuel pump could result in the engine stalling while a driver is operating the vehicle.
A shadow factory is what Boeing executives call a production line where engineers and mechanics work on fixing, maintaining or updating aircraft instead of building new ones. They exist for the company’s two-bestselling models, the 737 MAX and 787 Dreamliner.
There’s been enough drama in the past year to impact U.S. airlines quality rankings. An Alaska Airlines blowout grounded dozens of planes. There was a failed JetBlue-Spirit merger and Spirit’s bankruptcy. A summer tech outage crippled Delta. Southwest Airlines faced investor pressure and said it’s switching to assigned seating. All while planes remained packed and air traffic congested.
Professor Howard Weiss shares his thoughts about a variety of unusual OM topics with us monthly.
The reason a company might purposely list ingredients that are not in its products is that it may be concerned about cross-contamination in a bakery plant and wants to ensure it will not be legally responsible in the event of cross contamination. In other words, rather than trying to introduce quality control procedures to prevent cross-contamination in its plant, the company is willing to be untruthful when listing ingredients to minimize the chance and or cost of a law suit.



Quality control enhancement: AI can improve manufacturing quality control through vision systems trained on images and videos, accurately detecting complex product defects. Real-time monitoring identifies issues promptly to prevent future defects, and AI’s continuous learning enhances defect detection. (See Ch. 6)
It’s the highest finish for the Las Vegas-based no-frills airline. The smallest carrier in the rankings scored well in the categories of (1) fewest mishandled bags, (2) fewest cancellations and (3) fewest passengers involuntarily denied boarding.
