Roster of Manufacturing DaySM 2015 sponsors has added 2 key supporters as American Foundry Society and Mastercam recently pledged their support for this national movement at the Bronze level. American Foundry Society renewed their sponsorship for third year and Mastercam is a sponsor for the first time. Sponsors provide resources to support manufacturers participating in the program, a grassroots effort by U.S. manufacturers to improve public perception of manufacturing in America.