FRANK CUTRER has been cleaning windows for a living for the past 10 years, and five years ago he started his own business, Maine Panes. Although he has commercial accounts, 90 percent of his business comes from luxury homes in Portland’s West End. Cutrer says he pulls in about $60,000 a year, which leaves him with about $40,000 after expenses and taxes. Cutrer says he likes meeting new people and making his own hours, but there are drawbacks to the job too. He sometimes works 60-hour weeks, including weekends, and he’s always at the mercy of the weather.