Charlie Jenkins, left, shapes a glass piece while Carel Shonerd blows on the metal tube to inflate it on Saturday at Tandem Glass in Dresden. Jenkins said that a lot of the time glass blowing is a group effort.

Some of the glass cups and a bowl for sale on Saturday at Tandem Glass in Dresden. A portion of sales was donated to benefit Maine Crafts Association and The Good Shepherd Food Bank.

People look at displays on Saturday at Tandem Glass in Dresden. A portion of sales was donated to benefit Maine Crafts Association and The Good Shepherd Food Bank.

Carel Shonerd takes a piece of glass out of a furnace on Saturday at Tandem Glass in Dresden.