In addition to making the “tight ” barrels, which could carry such liquids as wine and oil, coopers manufactured“ slack ” barrels, which were not watertight.
Bez ūdensnecaurlaidīgām mucām, kas domātas šķidrumiem, piemēram, vīnam un eļļai, mucinieki gatavo arī sauspildījuma mucas, kas paredzētas tādiem produktiem kā milti vai naglas.