COST OF QUALITY AND TAGUCHI LOSS FUNCTIONS. Radnor Industries makes a variety of small one- to four-cup automatic coffeemakers that are used by hotels and in some residential settings for people who just need that quick jolt of caffeine to get their day started. It is critical that the machines are durable and work properly as they are often situated on the same desk as someone's laptop computer in a hotel room. Nothing can make a hotel guest more frustrated than puddles of water everywhere and a mess to clean up before they even get their day going