El PTFE es uno de los pl\u00e1sticos m\u00e1s f\u00e1ciles de mecanizar y uno de los m\u00e1s f\u00e1ciles de arruinar. Es extremadamente blando, muy resbaladizo y tiene un coeficiente de dilataci\u00f3n t\u00e9rmica aproximadamente diez veces mayor que el del acero. Cada una de esas propiedades dicta una regla.<\/p>\n\n
Ap\u00f3yelo por completo. Como es blando, la propia presi\u00f3n de sujeci\u00f3n puede deformarlo, y como es resbaladizo, las fuerzas de amarre normales no bastan para sujetarlo. Un portapinzas o unas garras blandas mecanizadas al perfil de la pieza resuelven ambos problemas. Mantenga las herramientas muy afiladas, con gran \u00e1ngulo de desprendimiento y un \u00e1ngulo de incidencia amplio, porque una herramienta embotada empuja el material en lugar de cortarlo y deja una superficie embotada.<\/p>\n\n
Controle el calor y mida tarde. El PTFE crece unos 0,12 mm por metro por cada 10 C de aumento, as\u00ed que una pieza mecanizada en caliente y medida en fr\u00edo quedar\u00e1 fuera de tolerancia. D\u00e9jela estabilizarse a 20 C antes de la medici\u00f3n final y, si mantiene una tolerancia ajustada, mecanice, deje reposar y d\u00e9 una pasada de acabado. Por \u00faltimo, desbarbe con suavidad: las rebabas del PTFE son blandas y se pliegan en lugar de romperse, as\u00ed que la herramienta correcta es un raspado ligero y no un abrasivo r\u00edgido.<\/p>\n\n","protected":false},"excerpt":{"rendered":"
El PTFE es lo bastante blando para marcarse con la u\u00f1a y lo bastante resbaladizo para salirse de un plato. Se mecaniza de maravilla cuando se respetan unas cuantas reglas.<\/p>\n","protected":false},"author":193679612,"featured_media":175,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"Five things to know before machining virgin PTFE: fixturing, feeds, coolants, burr control and handling after the cut.","jetpack_seo_html_title":"Machining Virgin PTFE: Five Practical Tips | Top Plastic","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_tp_seo_title":"Machining Virgin PTFE: Five Practical Tips | Top Plastic","_tp_seo_desc":"Five things to know before machining virgin PTFE: fixturing, feeds, coolants, burr control and handling after the cut.","_tp_summary":"","_tp_updated":"","_jetpack_feature_clip_id":0,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[132593],"tags":[132591],"class_list":["post-174","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-machining","tag-machining"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pcp8Cz-2O","jetpack-related-posts":[{"id":122,"url":"https:\/\/cntopplastics.com\/es\/pvdf-chemical-service\/","url_meta":{"origin":174,"position":0},"title":"PVDF para servicio qu\u00edmico: qu\u00e9 resiste y d\u00f3nde falla","author":"jessemei","date":"2026-07-02","format":false,"excerpt":"PVDF sits between PTFE and PVC in both price and performance. It is excellent for halogenated and oxidising media, and the wrong choice for a few specific ones.","rel":"","context":"En \u00abMaterial Guide\u00bb","block_context":{"text":"Material Guide","link":"https:\/\/cntopplastics.com\/es\/category\/material-guide\/"},"img":{"alt_text":"PVDF for chemical service: what it resists, where it fails","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pvdf-chemical-service.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pvdf-chemical-service.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pvdf-chemical-service.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pvdf-chemical-service.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":114,"url":"https:\/\/cntopplastics.com\/es\/ptfe-fillers-explained\/","url_meta":{"origin":174,"position":1},"title":"Las cargas del PTFE explicadas: vidrio, carbono, bronce y lo que hace realmente cada una","author":"jessemei","date":"2026-07-30","format":false,"excerpt":"Virgin PTFE is soft, creeps and wears fast under load. The filler you choose fixes one problem and usually creates another. Here is the map.","rel":"","context":"En \u00abMaterial Guide\u00bb","block_context":{"text":"Material Guide","link":"https:\/\/cntopplastics.com\/es\/category\/material-guide\/"},"img":{"alt_text":"PTFE fillers explained: glass, carbon, bronze and what each one actually does","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-ptfe-fillers-explained.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-ptfe-fillers-explained.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-ptfe-fillers-explained.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-ptfe-fillers-explained.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":154,"url":"https:\/\/cntopplastics.com\/es\/cnc-tolerance-engineering-plastics\/","url_meta":{"origin":174,"position":2},"title":"\u00bfQu\u00e9 tolerancia se puede mantener realmente en los pl\u00e1sticos t\u00e9cnicos?","author":"jessemei","date":"2026-03-12","format":false,"excerpt":"Plastics are not metals, and the tolerance table you use for steel will get you into trouble. Here are realistic numbers by material and size.","rel":"","context":"En \u00abMachining\u00bb","block_context":{"text":"Machining","link":"https:\/\/cntopplastics.com\/es\/category\/machining\/"},"img":{"alt_text":"What tolerance can you actually hold in engineering plastics?","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cnc-tolerance-engineering-plastics.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cnc-tolerance-engineering-plastics.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cnc-tolerance-engineering-plastics.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cnc-tolerance-engineering-plastics.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":158,"url":"https:\/\/cntopplastics.com\/es\/stress-relief-sheet\/","url_meta":{"origin":174,"position":3},"title":"Alivio de tensiones en la placa extruida: por qu\u00e9 su pieza se movi\u00f3 tras el mecanizado","author":"jessemei","date":"2026-02-26","format":false,"excerpt":"You machined a flat plate, measured it, shipped it, and the customer says it is bowed. The material did not change \u2014 you released stress that was already there.","rel":"","context":"En \u00abMachining\u00bb","block_context":{"text":"Machining","link":"https:\/\/cntopplastics.com\/es\/category\/machining\/"},"img":{"alt_text":"Stress relief in extruded sheet: why your part moved after machining","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-stress-relief-sheet.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-stress-relief-sheet.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-stress-relief-sheet.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-stress-relief-sheet.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":172,"url":"https:\/\/cntopplastics.com\/es\/oil-gas-seal-components\/","url_meta":{"origin":174,"position":4},"title":"Materiales para juntas de estanqueidad y anillos de respaldo en petr\u00f3leo y gas","author":"jessemei","date":"2025-12-25","format":false,"excerpt":"High pressure, rapid gas decompression and sour service eliminate most polymers immediately. What survives, and what to specify.","rel":"","context":"En \u00abIndustry Applications\u00bb","block_context":{"text":"Industry Applications","link":"https:\/\/cntopplastics.com\/es\/category\/industry-applications\/"},"img":{"alt_text":"Seal and back-up ring materials for oil and gas","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":168,"url":"https:\/\/cntopplastics.com\/es\/cutting-sheet-square\/","url_meta":{"origin":174,"position":5},"title":"Cortar placa a escuadra: c\u00f3mo mantenemos una escuadra ajustada en un panel largo","author":"jessemei","date":"2026-01-15","format":false,"excerpt":"A panel can be dimensionally perfect and still be useless if the corners are not square. Here is the sequence that keeps them square.","rel":"","context":"En \u00abMachining\u00bb","block_context":{"text":"Machining","link":"https:\/\/cntopplastics.com\/es\/category\/machining\/"},"img":{"alt_text":"Cutting sheet square: how we hold tight squareness on a long panel","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cutting-sheet-square.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cutting-sheet-square.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cutting-sheet-square.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cutting-sheet-square.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-ptfe-machining-tips.jpg?fit=1000%2C1000&ssl=1","_links":{"self":[{"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/posts\/174","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/users\/193679612"}],"replies":[{"embeddable":true,"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/comments?post=174"}],"version-history":[{"count":3,"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/posts\/174\/revisions"}],"predecessor-version":[{"id":488,"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/posts\/174\/revisions\/488"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/media\/175"}],"wp:attachment":[{"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/media?parent=174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/categories?post=174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cntopplastics.com\/es\/wp-json\/wp\/v2\/tags?post=174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}