Click on "Learn more about this agency" button below to view Eligibilities being considered and other IMPORTANT information. The primary purpose of this position is to serve as the technical expert for Computer Numerical Control (CNC) and Additive Manufacturing (AM) machines and equipment. To operate, maintain and provide training on specialized shop machinery.
In order to qualify, you must meet the quality level of experience requirements described in the Office of Personnel Management (OPM) Qualification Standards Handbook X-118C. QUALIFICATIONS: Applicants will be rated in accordance with the OPM Qualification Standard Handbook X-118C for the WG-4700 General Maintenance & Operations Work Group. Although a specific length of time and experience is not required for most blue-collar positions, you must meet any screen-out element listed, and show through experience and training that you possess the quality level of knowledge and skill necessary to perform the duties of the position at the level for which you are applying. Qualification requirements emphasis is on the quality of experience, not necessarily the length of time. The screen out element for this position is the ability to do the work of a Model Maker without more than normal supervision. JOB ELEMENTS: Your qualifications will be evaluated on the basis of your level of knowledge, skills, abilities and/or competencies in the following areas: 1\. Comprehensive knowledge of a variety of conventional, computer numerical control (CNC) and 3-dimentional printing(AM) machine tools such as lathes, vertical, and horizontal boring mills; bench, plain, and universal milling machines; shapers; planers; internal and external grinders; thread cutters; and radial drills; and a variety of machine tool attachments such as rotary vises, magnetic chucks, vertical milling heads, angular drive heads, taper attachments, rotary tables, and others. Skill and ability in operating CNC machine tools through one complete cycle to manufacture the first part; proof dimensions; check sufficiency of programming, tooling, fixturing, and machine operations, edit programs and make the normal changes required; and recommend changes to programs on deficiencies noted; and in the use of precision measuring instruments and equipment such as Vernier calipers; height gauges; squares; protractors; inside, outside, and depth micrometers; surface gauges; "V" blocks; parallel bars; internal and external micrometers, Vernier height and depth gauges, indicators, scales, and various standard and preset snap, plug, or ring gauges. 2\. Knowledge of various metals and other materials such as aluminum, brass, bronze, high carbon and alloy steels, chrome, nickel, titanium, nylon, rubber, plastics and Teflon, and of the effect and relationship of heat treating, annealing, plating, welding and other related work processes on machining operations in completing an assignment. Skill and ability in operating 3-dimentional Polymer/Metal printing (AM) machines. Performs material loading/unloading. Understands machine certification requirements and performs routine machine maintenance. Calibrates print heads and makes necessary adjustments to print quality parts. Checks parts for defects/ dimensional accuracy and adjusts machine characteristics to correct defects. 3\. Knowledge of advanced shop mathematics including plane geometry, the use of trigonometric functions and machinist handbook formulas used in laying out work and setting up machine tools, and of blueprints and their interpretation, program readouts and technical directives, the use of shop mathematics, and shop floor programming; and knowledge of the USAF Technical Order Program and its procedures. 4\. Knowledge of how to develop and fabricate special tools, fixtures, and jigs to hold, machine, fabricate, and assemble items with compound curves and intersecting compound angles. In addition, they are skilled in using a variety of specialized and precise measuring devices such as super-micrometers, shadowgraphs, and a variety of specialized tools and fabricate equipment such as electrical discharge machines, jeweler's lathes, micro-soldering and welding equipment, and a variety of electronic tools and meters. 5\. Skill and ability in using conventional machine tools and their attachments to perform machining processes requiring special adaptation of the equipment or process for which they were not specifically designed; and in using special or improvised tools, fixtures, and setups to machine surfaces configurations such as curved surfaces requiring machine feeds in different planes simultaneously, surfaces having closely interrelated dimensions, or surfaces having unusual or compound angular relationships. PART-TIME OR UNPAID EXPERIENCE: Credit will be given for appropriate unpaid and or part-time work. You must clearly identify the duties and responsibilities in each position held and the total number of hours per week. VOLUNTEER WORK EXPERIENCE: Refers to paid and unpaid experience, including volunteer work done through National Service Programs (i.e., Peace Corps, AmeriCorps) and other organizations (e.g., professional; philanthropic; religious; spiritual; community; student and social). Volunteer work helps build critical competencies, knowledge and skills that can provide valuable training and experience that translates directly to paid employment. You will receive credit for all qualifying experience, including volunteer experience. PHYSICAL EFFORT: The work requires standing, stooping, bending, and reaching. Frequently handles, lifts, and carries objects weighing up to 40 pounds, and occasionally lifts and moves heavier items with assistance. WORKING CONDITIONS: Work is performed inside in areas that are usually noisy and dirty, and where there is constant danger to the skin and eyes from flying metal chips and abrasive particles; skin irritation from contact with coolants, lubricants, and abrasive compounds; and danger to fingers, hands, and other body parts from cutting tools, grinding wheels, rotating pieces, and moving parts of machines.
- Manufactures complex and non-routine parts and items of equipment from raw stock of different metals, metal alloys, and other materials through the use of conventional, computer numerical control (CNC) and additive manufacturing (AM) machine tools, and precision handwork. - Sets up and operates a variety of conventional, computer numerical control (CNC) and additive manufacturing machine tools such as lathes, vertical and horizontal boring mills; bench, plain, and universal milling machines; multi-axis CNC milling machines; EDM wire cutting machine; shapers; planers; internal and external grinders; thread cutters; radial drills; metal and polymer additive manufacturing systems and Metrologic scanning equipment to accomplish untried tasks, procedures, and prototypes. - Uses a variety of precision measuring instruments and equipment such as Vernier calipers; height gauges; squares; protractors; inside, outside, and depth micrometers; electronic scanning/probing measurement equipment; surface gauges; V-blocks; parallel bars; gauge blocks; dial indicators; optical and mechanical comparators; and go and no-go thread, ring, bore, and plug gauge to attain dimensions and maintain tolerances. - Utilizes safety practices and procedures following established safety rules and regulations and maintains a safe and clean work environment. - Controls tools. Certifies work produced under the USAF Technical Order Program