# Tasks & work activities — harp maker Source: O*NET 30.3, occupation 49-9063.00 (Musical Instrument Repairers and Tuners) — manual nearest-occupation mapping via ISCO group 7312; the official ESCO crosswalk has no entry for this ESCO occupation. ## Task statements - **[Core]** Play instruments to evaluate their sound quality and to locate any defects. - **[Core]** Adjust string tensions to tune instruments, using hand tools and electronic tuning devices. - **[Core]** Disassemble instruments and parts for repair and adjustment. - **[Core]** Inspect instruments to locate defects, and to determine their value or the level of restoration required. - **[Core]** Repair cracks in wood or metal instruments, using pinning wire, lathes, fillers, clamps, or soldering irons. - **[Core]** Reassemble instruments following repair, using hand tools and power tools and glue, hair, yarn, resin, or clamps, and lubricate instruments as necessary. - **[Core]** Compare instrument pitches with tuning tool pitches to tune instruments. - **[Core]** String instruments, and adjust trusses and bridges of instruments to obtain specified string tensions and heights. - **[Core]** Repair or replace musical instrument parts and components, such as strings, bridges, felts, and keys, using hand and power tools. - **[Core]** Polish instruments, using rags and polishing compounds, buffing wheels, or burnishing tools. - **[Core]** Shape old parts and replacement parts to improve tone or intonation, using hand tools, lathes, or soldering irons. - **[Supplemental]** Make wood replacement parts, using woodworking machines and hand tools. - **[Core]** Mix and measure glue that will be used for instrument repair. - **[Supplemental]** Align pads and keys on reed or wind instruments. - **[Supplemental]** Adjust felt hammers on pianos to increase tonal mellowness or brilliance, using sanding paddles, lacquer, or needles. - **[Supplemental]** Solder posts and parts to hold them in their proper places. - **[Supplemental]** Remove dents and burrs from metal instruments, using mallets and burnishing tools. - **[Supplemental]** Wash metal instruments in lacquer-stripping and cyanide solutions to remove lacquer and tarnish. - **[Supplemental]** Refinish instruments to protect and decorate them, using hand tools, buffing tools, and varnish. - **[Supplemental]** Deliver pianos to purchasers or to locations of their use. - **[Supplemental]** Refinish and polish piano cabinets or cases to prepare them for sale. - **[Supplemental]** Remove irregularities from tuning pins, strings, and hammers of pianos, using wood blocks or filing tools. - **[Supplemental]** Strike wood, fiberglass, or metal bars of instruments, and use tuned blocks, stroboscopes, or electronic tuners to evaluate tones made by instruments. - **[Supplemental]** Assemble and install new pipe organs and pianos in buildings. ## Detailed work activities - Adjust equipment to ensure optimal performance. - Adjust tuning or functioning of musical instruments. - Align equipment or machinery. - Assemble products or production equipment. - Clean equipment, parts, or tools to repair or maintain them in good working order. - Disassemble equipment for maintenance or repair. - Fabricate parts or components. - Inspect mechanical equipment to locate damage, defects, or wear. - Install instrumentation or electronic equipment or systems. - Lubricate equipment to allow proper functioning. - Polish materials, workpieces, or finished products. - Prepare compounds or solutions to be used for repairs. - Reassemble equipment after repair. - Refinish wood or metal surfaces. - Remove dents from equipment, materials, tools or structures. - Repair worn, damaged, or defective mechanical parts. - Replace worn, damaged, or defective mechanical parts. - Smooth surfaces of objects or equipment. - Solder parts or connections between parts. - Test mechanical equipment to ensure proper functioning. - Travel to work sites to perform installation, repair or maintenance work.