Rubber band effect dating
The heavy steel arms—operated by steam cylinders—can throw a six-foot diameter, eighty-foot-long log. The first cut removes mostly wane—the round and bark-covered edge of the log. The movement of the carriage is controlled by the sawyer.At the extreme right side of the photograph (below), the next log is held by the cradle. log (see photo, right) is carefully rolled and positioned in the carriage prior to making the first cut. The off-bearer (right side of photo, below) secures the fall-off until the log clears the blade, though large logs require more help. The sawyer looks at his order board then motions to the rachet setter, who operates the carriage, racheting the log closer or farther from the blade.
To achieve this, effects technicians traced a line over each frame with the prop, then enlarged each line and added the glow.
The main engine, an Ames twin-cylinder, built in 1906 and still operating, powers the headrig and edger.
A second steam engine powers the carriage, which is drawn back and forth on its tracks by a cable-and-pulley system.
Fleischer ceased depending on the rotoscope for fluid action by 1924 when Dick Huemer became the Animation Director and brought his animation experience gained from his years on the Mutt and Jeff series.
Fleischer returned to rotoscoping in the 1930s for referencing intricate dance movements in his Popeye and Betty Boop cartoons.