{"product_id":"positron-90-degree-hot-end","title":"Positron 90 Degree Hot End","description":"\u003ch2\u003eLDO Positron V3.2 90° Hotend Kit — Custom Phaetus 90-Degree V6 Hotend, Bimetallic Heatbreak, 75W Heater, 0.4mm Nozzle\u003c\/h2\u003e\n\n\u003cp\u003e\n  The \u003cstrong\u003ePositron V3.2 90° Hotend\u003c\/strong\u003e is the only hotend that exists\n  specifically for the Positron V3.2 — a custom assembly manufactured by Phaetus\n  for LDO that bends the entire filament path and nozzle exit at a\n  \u003cstrong\u003e90-degree angle\u003c\/strong\u003e. This geometry is not an afterthought: the\n  Positron prints \u003cem\u003eupside down\u003c\/em\u003e, with the toolhead at the base and the bed\n  suspended above it. A conventional vertical nozzle exit would collide with the\n  Positron's inverted kinematics. The 90° exit allows the nozzle to point upward\n  toward the glass bed while the toolhead moves in XY below it — the physical\n  prerequisite for the entire Positron concept to function. If you need a\n  replacement or are building a Positron V3.2 from BOM, this is the only correct\n  hotend.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  ⚠️ \u003cstrong\u003ePositron V3.2 only.\u003c\/strong\u003e This hotend is not compatible with any\n  other printer. The 90° exit geometry has no application outside the Positron's\n  inverted printing architecture.\u003cbr\u003e\n  ⚠️ \u003cstrong\u003eHot tightening required.\u003c\/strong\u003e Always perform final nozzle tightening\n  at operating temperature to prevent leaks between nozzle and heatblock.\u003cbr\u003e\n  ⚠️ \u003cstrong\u003eMax temperature: 260°C.\u003c\/strong\u003e Designed and rated for PLA and PETG\n  on the Positron platform. Verify hotend temperature limits in your Klipper config\n  before attempting higher-temp materials.\n\u003c\/p\u003e\n\n\u003ch3\u003eWhy the Positron Needs a 90° Hotend — The Engineering Behind It\u003c\/h3\u003e\n\u003cp\u003e\n  Every other FDM printer in existence points its nozzle downward — gravity assists\n  the extrusion and the bed is below. The Positron inverts this: the toolhead is on\n  the base plate, the gantry folds over it, and the transparent ITO glass bed hangs\n  above the toolhead. The nozzle prints \u003cem\u003eupward\u003c\/em\u003e into the glass. To achieve\n  this while keeping the heater block, heatbreak, and cold end in a practical\n  orientation, Phaetus designed this hotend with a \u003cstrong\u003e90° bend at the\n  V6-style nozzle exit\u003c\/strong\u003e — the filament enters vertically from the bowden\n  tube, transitions through the 90° heatblock, and exits horizontally toward the\n  glass bed above. It's mechanically unusual, thermally demanding to design correctly,\n  and entirely unique to this printer.\n\u003c\/p\u003e\n\n\u003ch3\u003e75W Heater — Oversized Power for Consistent Melt-Zone Performance\u003c\/h3\u003e\n\u003cp\u003e\n  The Positron's 90° heatblock geometry creates a longer thermal path from heater\n  to nozzle tip than a straight heatblock — more metal to heat through the bend.\n  The solution is a \u003cstrong\u003e75W heater cartridge\u003c\/strong\u003e, significantly more powerful\n  than the 40W or 60W heaters in most consumer hotends. The higher wattage compensates\n  for the thermal path length and ensures the melt zone reaches and holds target\n  temperature quickly even during sustained high-speed printing at the Positron's\n  rated 250mm\/s. Fast heat-up, stable temperature under load.\n\u003c\/p\u003e\n\n\u003ch3\u003eBimetallic Heatbreak — Sharp Thermal Gradient Through the Bend\u003c\/h3\u003e\n\u003cp\u003e\n  Managing heat creep through a 90° bend is more challenging than in a straight\n  hotend — the heatbreak has to maintain a sharp thermal transition at the curve\n  without creating a stress concentration point. This hotend uses a\n  \u003cstrong\u003ebimetallic heatbreak\u003c\/strong\u003e that combines a stainless steel inner tube\n  (low thermal conductivity, resists heat migration) with a copper or aluminum\n  outer body (high conductivity, efficient heatsink coupling). The design is\n  optimized with finite element analysis to achieve the steepest possible temperature\n  gradient at the transition zone — keeping the cold end cold and the melt zone hot\n  for clog-free operation.\n\u003c\/p\u003e\n\n\u003ch3\u003eV6-Style Nozzle — 0.4mm Included, Standard Ecosystem\u003c\/h3\u003e\n\u003cp\u003e\n  Despite its unusual exit angle, the Positron hotend uses a\n  \u003cstrong\u003estandard V6-thread nozzle\u003c\/strong\u003e at the tip — meaning your existing\n  library of V6-compatible nozzles (brass, hardened steel, plated copper) is\n  directly usable. A \u003cstrong\u003e0.4mm nozzle is included\u003c\/strong\u003e in the kit to\n  get you printing immediately. Nozzle changes follow the same procedure as any\n  V6 hotend — with the standard hot-tightening step required for a leak-free seal.\n\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhaetus (custom for LDO \/ Positron V3.2)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible printer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePositron V3.2 only\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHotend geometry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90° exit angle — upward-pointing nozzle for inverted printing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeatbreak type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBimetallic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNozzle thread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eV6 standard\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded nozzle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.4mm (V6 type)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e260°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilament diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlow type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard (bowden-fed from Positron extruder)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003ePhaetus 90° heatblock and heatbreak assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003e75W heater cartridge (installed)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003eThermistor (installed)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003e1× 0.4mm V6-style nozzle\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003eExtra silicone socks\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003eMounting screws\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003eRetaining bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhen Do You Need This?\u003c\/h3\u003e\n\u003cp\u003e\n  If you're building a Positron V3.2 from BOM, this is a required component —\n  there is no substitute. If you're replacing a damaged or failed hotend on an\n  existing Positron, this is the only correct replacement. Because the 90°\n  exit geometry is unique to this printer and manufactured in limited quantities\n  by Phaetus specifically for the Positron platform, keeping a spare on hand\n  is worth considering if the Positron is your primary travel machine.\n\u003c\/p\u003e\n\n\u003ch3\u003eResources\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003ca href=\"https:\/\/wiki.positron3d.com\" target=\"_blank\" rel=\"noopener\"\u003e\n      Positron Wiki — official build documentation, hotend installation, Klipper config\n    \u003c\/a\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003ca href=\"https:\/\/ldomotion.com\/p\/assembly\/Positron-V32\" target=\"_blank\" rel=\"noopener\"\u003e\n      LDO Positron V3.2 Assembly Guide — hotend mounting and wiring\n    \u003c\/a\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\n  Browse all Positron V3.2 spare parts and accessories at\n  \u003ca href=\"\/collections\/3d-printer-hotends\"\u003e3D Printer Hotends\u003c\/a\u003e, or explore all\n  motion and toolhead upgrades at\n  \u003ca href=\"\/collections\/3d-printer-upgrades\"\u003e3D Printer Upgrades\u003c\/a\u003e.\n\u003c\/p\u003e","brand":"West3D 3D Printing Supplies","offers":[{"title":"Default Title","offer_id":52735671206182,"sku":"LDO-P-HOTEND","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/1986\/2822\/files\/positron-90-degree-hot-end-west3d-3d-printing-supplies-ldo-systems-678608.jpg?v=1773259450","url":"https:\/\/supplies3d.shop\/products\/positron-90-degree-hot-end","provider":"SUPPLIES3D","version":"1.0","type":"link"}