In addition to making the “tight ” barrels, which could carry such liquids as wine and oil, coopers manufactured“ slack ” barrels, which were not watertight.
Peale veini ja õli hoidmiseks sobivate tihedate vaatide valmistasid aamissepad ka hõredamaid vaate, mis polnud vedelikukindlad, ent olid ideaalsed tahke kraami, nagu jahu või naelte vedamiseks.