A plastic welder uses specialized equipment and welding tools to fabricate and assemble plastic parts into a finished product. Their duties include cutting and shaping materials, laying out sheet plastic, fiberglass, or other materials, and operating plastic presses. This career requires mechanical aptitude, technical skills, the ability to read blueprints and schematics, and the ability to carry out a job to meet specifications. Other qualifications may include a high school diploma or GED certification. Some plastic welders take up an apprenticeship to gain experience.