A professional who tends machine that saws wooden blocks into shingles. Responsibilities include:

• Places block in machine carriage and adjusts carriage to ensure that shingles are of specified thickness.
• Starts machine that moves carriage back and forth to feed block into rotating saw to cut shingles.
• Catches shingles as they fall from saw, grades shingles according to knots, rot, or other defects, and trims off defects with power saw.
• Sorts trimmed shingles according to grade and tosses shingles into specified containers.