A professional who assembles prepunched aluminum fin plates and copper tubing to form cooling coils for air-conditioning units, using handtools and other equipment. Responsibilities include:

• Places fin plates on worktable and clamps into position.
• Inserts copper tubing through holes in fin plates.
• Depresses switch to activate hydraulic rams, forcing them through tubes, to expand tubes and lock fins in position.
• Joins completed assemblies, using end plates and pneumatic hammer to expand ends of tubes.
• Heats tube ends and seals joints, using solder.
• May operate press machine to punch fins and tubes required to fabricate air-conditioning coils.