{"product_id":"phaetus-aeflex™-tpu-85a-hf-filament-1kg-spool","title":"Phaetus aeFlex™ TPU-85A-HF Filament 1kg Spool","description":"\u003ch2\u003ePhaetus aeFlex TPU-85A-HF — soft 85A flexible, built for speed\u003c\/h2\u003e\n\u003cp\u003eA Shore \u003cstrong\u003e85A\u003c\/strong\u003e flexible TPU in Phaetus's \u003cstrong\u003ehigh-flow (HF)\u003c\/strong\u003e grade. It's noticeably softer and more rubbery than the 90A\/95A TPUs most people start with, but the HF formulation is tuned to keep flowing at speed — Phaetus rates it for \u003cstrong\u003eover 100 mm\/s\u003c\/strong\u003e when paired with a capable direct-drive extruder. Good for gaskets, seals, grommets, vibration dampers, protective cases, RC tires, and any squishy functional part.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it prints well\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSoft, grippy, high-elongation parts that need to bend and bounce back.\u003c\/li\u003e\n\u003cli\u003eFaster than typical soft TPU thanks to the high-flow grade — you don't have to crawl at 15 mm\/s.\u003c\/li\u003e\n\u003cli\u003eLayer bonding and surface finish are good in the 85A-HF class when dry and run at moderate retraction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHardware you need\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect-drive extruder strongly recommended.\u003c\/strong\u003e 85A is soft enough that it buckles and jams in most Bowden setups. A short, well-constrained filament path matters more than raw temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo hardened nozzle needed.\u003c\/strong\u003e This is unfilled TPU — no glass or carbon fiber — so a standard brass nozzle is fine. (Only our glass\/carbon-filled engineering lines need a hardened or DLC nozzle.)\u003c\/li\u003e\n\u003cli\u003eHeated bed helpful but gentle; smooth PEI or a glue stick gives clean release.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTemperatures (start here, then dial in)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNozzle:\u003c\/strong\u003e ~200-225C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBed:\u003c\/strong\u003e ~20-50C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDensity:\u003c\/strong\u003e ~1.16 g\/cm3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese are typical values for the 85A high-flow TPU class. Confirm against Phaetus's published TDS for this exact spool and tune in 5C steps.\u003c\/p\u003e\n\n\u003ch3\u003eDrying — do not skip this\u003c\/h3\u003e\n\u003cp\u003eTPU is hygroscopic and re-absorbs moisture fast. Wet filament prints stringy, rough, and weak. Dry before use: \u003cstrong\u003e~50-65C for 4-6h\u003c\/strong\u003e (or 70C for ~7h) in a filament dryer or oven, then print straight from a dry box or reseal with desiccant. If a spool has been open on the shelf, dry it first — every time.\u003c\/p\u003e\n\n\u003cp\u003eStock-clearance pricing. New, factory-sealed 1kg spool, Black, 1.75mm.\u003c\/p\u003e","brand":"Phaetus","offers":[{"title":"Black","offer_id":44319785451742,"sku":"8006158198653","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/aeFlex_TPU-85A-HF_1_png.webp?v=1692655658","url":"https:\/\/formosissima.myshopify.com\/products\/phaetus-aeflex%e2%84%a2-tpu-85a-hf-filament-1kg-spool","provider":"dfh.fm","version":"1.0","type":"link"}