“Against the Grain” gallery reception in August("Against the Grain" / Lowell Arts)Seven visual artists are featured in an exhibit at Lowell Arts from July 25 to October 3. The theme of the exhibit explores unexpected directions for their materials and methods.Angela Saxon, one of the artists featured in the exhibit who primarily uses acrylic, mixed media, printing, and gouache (an opaque, water-based paint made of natural pigments, water, and a …