# Tire Builders > Operate machines to build tires. - Code: 51-9197.00 (O*NET-SOC; SOC 2018 51-9197) - Family: [Production](https://foundation.org.ai/occupations#family-51), one of its 114 occupations - Tasks: 20 tasks (3 core and 17 supplemental) - Page: https://foundation.org.ai/occupations/51-9197.00 - JSON: https://foundation.org.ai/data/tasks/51-9197.00.json ## What the work is made of 1. Build semi-raw rubber treads onto buffed tire casings to prepare tires for vulcanization in recapping or retreading processes. Core task · Task 14418 · Rated by 64 people who do the job, August 2020 2. Trim excess rubber and imperfections during retreading processes. Core task · Task 14430 · Rated by 65 people who do the job, August 2020 3. Fill cuts and holes in tires, using hot rubber. Core task · Task 14425 · Rated by 64 people who do the job, August 2020 4. Place tires into molds for new tread. Supplemental task · Task 14431 · Rated by 65 people who do the job, August 2020 5. Fit inner tubes and final layers of rubber onto tires. Supplemental task · Task 14423 · Rated by 64 people who do the job, August 2020 6. Buff tires according to specifications for width and undertread depth. Supplemental task · Task 21215 · Rated by 65 people who do the job, August 2020 7. Brush or spray solvents onto plies to ensure adhesion, and repeat process as specified, alternating direction of each ply to strengthen tires. Supplemental task · Task 14426 · Rated by 63 people who do the job, August 2020 8. Start rollers that bond tread and plies as drums revolve. Supplemental task · Task 14411 · Rated by 63 people who do the job, August 2020 9. Align treads with guides, start drums to wind treads onto plies, and slice ends. Supplemental task · Task 14415 · Rated by 63 people who do the job, August 2020 10. Inspect worn tires for faults, cracks, cuts, and nail holes, and to determine if tires are suitable for retreading. Supplemental task · Task 14413 · Rated by 64 people who do the job, August 2020 11. Measure tires to determine mold size requirements. Supplemental task · Task 14428 · Rated by 64 people who do the job, August 2020 12. Roll hand rollers over rebuilt casings, exerting pressure to ensure adhesion between camelbacks and casings. Supplemental task · Task 14427 · Rated by 62 people who do the job, August 2020 13. Position ply stitcher rollers and drums according to width of stock, using hand tools and gauges. Supplemental task · Task 14417 · Rated by 64 people who do the job, August 2020 14. Cut plies at splice points, and press ends together to form continuous bands. Supplemental task · Task 14414 · Rated by 63 people who do the job, August 2020 15. Depress pedals to rotate drums, and wind specified numbers of plies around drums to form tire bodies. Supplemental task · Task 14410 · Rated by 62 people who do the job, August 2020 16. Clean and paint completed tires. Supplemental task · Task 14422 · Rated by 64 people who do the job, August 2020 17. Rub cement sticks on drum edges to provide adhesive surfaces for plies. Supplemental task · Task 14424 · Rated by 64 people who do the job, August 2020 18. Depress pedals to collapse drums after processing is complete. Supplemental task · Task 14429 · Rated by 64 people who do the job, August 2020 19. Wind chafers and breakers onto plies. Supplemental task · Task 14419 · Rated by 64 people who do the job, August 2020 20. Pull plies from supply racks, and align plies with edges of drums. 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