Pours molten metal onto flat table to form sheets. Brushes sizing onto sheets and cuts sheets, using hook-knife and power shears. Hand-rolls sheets into tubes on mandrel, using handtools. Scrapes edges, using handtool to obtain required angle for soldering and solders seam.
Places pipe on mandrel and hammers pipe, using mallet to form and finish mouth.
Hand-rolls annealed sheet zinc in similar manner to form larger pipes.