HAMMERIN’!: BLACKSMITHING MASTERCLASS. Sign up for a beginner class on basic blacksmithing technique taught by Billy Barrett, of Bill Barrett Custom Knives. Prior experience is helpful but not necessary. All supplies are provided, and you work on a project to take home. Space is limited, so register early. This program is sponsored by the Friends of Historic Speedwell. $30 per person. Contact:Preregistration is required. To register, 973.285.6537.