{"product_id":"biqu-nebula-dual-gear-extruder","title":"Biqu Nebula Dual Gear Extruder","description":"\u003ch2\u003eBIQU Nebula Dual Gear Extruder — 6KG+ Extrusion Force, Planetary Gearbox, RGB Status, Built-in Filament Sensor, LGX Lite Footprint, Voron StealthBurner and EVA3 Compatible\u003c\/h2\u003e\n\n\u003cp\u003e\n  The \u003cstrong\u003eBIQU Nebula\u003c\/strong\u003e is a direct-drive dual-gear extruder built around\n  a \u003cstrong\u003eprecision planetary gear reduction system\u003c\/strong\u003e with large-diameter\n  hardened steel drive gears — delivering over \u003cstrong\u003e6KG of stable extrusion\n  force\u003c\/strong\u003e in a \u003cstrong\u003e143g lightweight package\u003c\/strong\u003e that mounts on\n  the same footprint as the \u003cstrong\u003eLGX Lite\u003c\/strong\u003e. It's designed as a\n  drop-in upgrade for \u003cstrong\u003eVoron Stealthburner, EVA3, and any LGX\n  Lite-compatible toolhead\u003c\/strong\u003e — adding built-in filament sensing,\n  one-button auto load\/unload, programmable RGB status lighting, and a\n  transparent magnetic front cover for filament path visibility, all without\n  adding significant mass to the toolhead.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  ⚠️ \u003cstrong\u003eMotor not included.\u003c\/strong\u003e The Nebula ships as an extruder\n  body — you will need a compatible stepper motor. Verify motor compatibility\n  with the LGX Lite motor spec for your toolhead.\u003cbr\u003e\n  ⚠️ \u003cstrong\u003ePrinted mounting brackets may be required\u003c\/strong\u003e for toolheads\n  other than Stealthburner and EVA3. Open-source models are available for\n  community-designed brackets.\u003cbr\u003e\n  ⚠️ \u003cstrong\u003eMax recommended stepper current: use within your toolboard's\n  rated limits.\u003c\/strong\u003e Compatible with EBB36 and EBB42 CAN toolboards.\n\u003c\/p\u003e\n\n\u003ch3\u003ePlanetary Gear Reduction + Large-Diameter Dual Drive — 6KG+ Force\u003c\/h3\u003e\n\u003cp\u003e\n  The Nebula's extrusion force comes from two compounding advantages: a\n  \u003cstrong\u003eprecision planetary gear reduction system\u003c\/strong\u003e that multiplies\n  motor torque mechanically, and \u003cstrong\u003elarge-diameter hardened steel dual\n  drive gears\u003c\/strong\u003e that maximize the filament contact surface on both sides\n  simultaneously. The combination delivers over \u003cstrong\u003e6KG of stable extrusion\n  force\u003c\/strong\u003e — sufficient to feed the most demanding engineering filaments\n  through long Bowden runs or tight hotends at high speed, with virtually zero\n  slip on flexible materials like TPU that defeat single-gear extruders at\n  elevated feed rates. The dual-drive geometry also ensures the filament path\n  is centered and constrained, reducing the lateral wobble that causes extrusion\n  artifacts at high speed.\n\u003c\/p\u003e\n\n\u003ch3\u003eBuilt-in Filament Sensor + G-code Button — Auto Load and One-Button Unload\u003c\/h3\u003e\n\u003cp\u003e\n  The Nebula integrates a \u003cstrong\u003efilament sensor directly in the extruder body\u003c\/strong\u003e\n  — when filament is inserted, the sensor triggers an automatic loading sequence\n  immediately. No manual commands, no console interaction required.\n  A dedicated \u003cstrong\u003eG-code button\u003c\/strong\u003e on the extruder body triggers\n  the unload sequence with a single press — executing a configurable macro\n  that can include purging, preheating, print pause, or any other action you\n  define in Klipper. Both the load and unload behaviors are fully configurable\n  via the provided Klipper macros (see Resources), making the Nebula as\n  useful for multi-material setups with external filament changers as it is\n  for single-material printing.\n\u003c\/p\u003e\n\n\u003ch3\u003eProgrammable RGB Status Lighting — 16 Million Colors\u003c\/h3\u003e\n\u003cp\u003e\n  Two onboard NeoPixels (Klipper pin: \u003ccode\u003eEBBCan:PD3\u003c\/code\u003e, \u003ccode\u003echain_count: 2\u003c\/code\u003e,\n  \u003ccode\u003ecolor_order: GRB\u003c\/code\u003e) give the Nebula programmable RGB lighting\n  across \u003cstrong\u003e16 million color options\u003c\/strong\u003e — compatible with the\n  \u003ccode\u003eklipper-led_effect\u003c\/code\u003e plugin for animated status indication.\n  Set different colors for heating, printing, filament runout, and print\n  completion — visible across the room without checking a screen. For builders\n  who use RGB consistently across their toolhead setup, the Nebula matches\n  the Stealthburner Neopixel aesthetic cleanly.\n\u003c\/p\u003e\n\n\u003ch3\u003eLGX Lite Footprint — Drop-In for Stealthburner and EVA3\u003c\/h3\u003e\n\u003cp\u003e\n  The Nebula uses the \u003cstrong\u003esame mounting hole pattern as the Bondtech LGX\n  Lite\u003c\/strong\u003e — meaning every toolhead designed around LGX Lite geometry\n  accepts the Nebula without printed part modifications. This includes the\n  Voron \u003cstrong\u003eStealthburner\u003c\/strong\u003e and \u003cstrong\u003eEVA3\u003c\/strong\u003e as primary\n  targets, plus any community toolhead designed for LGX Lite compatibility.\n  Open-source appearance models are available for builders who want to design\n  custom mounting brackets for other applications.\n\u003c\/p\u003e\n\n\u003ch3\u003ePOM Housing — Heat-Resistant, Dimensionally Stable in Enclosed Printers\u003c\/h3\u003e\n\u003cp\u003e\n  The Nebula's housing is made from \u003cstrong\u003ePOM (Polyoxymethylene)\u003c\/strong\u003e\n  — a high-strength engineering polymer with excellent dimensional stability\n  at elevated temperatures. Unlike printed ABS or ASA extruder bodies that\n  can warp or creep under sustained heat from an enclosed chamber, POM\n  maintains its geometry reliably in hot-chamber environments, preventing\n  the gear misalignment that develops in plastic-bodied extruders over time.\n  At \u003cstrong\u003e143g total weight\u003c\/strong\u003e, the Nebula adds minimal inertia to\n  the toolhead — important for CoreXY printers running high-acceleration\n  profiles where toolhead mass directly impacts print quality.\n\u003c\/p\u003e\n\n\u003ch3\u003eTransparent Magnetic Front Cover — Tool-Free Access\u003c\/h3\u003e\n\u003cp\u003e\n  The extruder's front shell uses a \u003cstrong\u003etransparent magnetic quick-release\n  design\u003c\/strong\u003e that snaps on and off without tools. The transparent panel\n  lets you visually monitor filament engagement and gear contact in real time\n  without disassembling anything. When you need to clear a jam or inspect the\n  drive gears, the cover removes in seconds with no screws — a meaningful\n  quality-of-life feature on an extruder that runs as many load\/unload cycles\n  as a direct drive unit does.\n\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBIQU (BIGTREETECH)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNebula Dual Gear Extruder\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrive type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual drive — hardened steel gears + planetary gear reduction\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExtrusion force\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6KG+ stable\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e143g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePOM (heat-resistant engineering polymer)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting footprint\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLGX Lite compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible toolheads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVoron Stealthburner, EVA3, any LGX Lite mount\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilament sensor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBuilt-in — auto-load on insertion\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eG-code button\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBuilt-in — one-press configurable macro trigger\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRGB lighting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2× NeoPixel — 16 million colors, GRB order\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKlipper RGB pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003ccode\u003eEBBCan:PD3\u003c\/code\u003e, chain_count: 2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront cover\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransparent magnetic — tool-free quick release\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eToolboard compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEBB36, EBB42 CAN toolboards\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo — source separately\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\u003eBIQU Nebula extruder body (gears, planetary gearbox, POM housing)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003eTransparent magnetic front cover\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003eBuilt-in filament sensor and G-code button (pre-installed)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003eMounting hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's NOT Included\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eStepper motor — source LGX Lite-compatible NEMA17 pancake motor separately\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eToolboard (EBB36\/EBB42) — sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eHotend — source separately for your toolhead\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKlipper Configuration — RGB and Filament Sensor\u003c\/h3\u003e\n\u003cp\u003e\n  Full Klipper config including NeoPixel setup, filament sensor macros, and\n  the auto load\/unload G-code scripts are available in the official BTT Wiki\n  documentation. The load and unload distances, speeds, and purge parameters\n  are all configurable via the \u003ccode\u003e_NEBULA_VARIABLE\u003c\/code\u003e macro section.\n\u003c\/p\u003e\n\n\u003ch3\u003eWhen Do You Need This?\u003c\/h3\u003e\n\u003cp\u003e\n  The Nebula is the right choice if you're building or upgrading a Stealthburner\n  or EVA3 toolhead and want an extruder that combines serious extrusion force\n  with practical quality-of-life features — filament sensing, one-button unload,\n  and RGB status — without adding weight that compromises acceleration performance.\n  At 143g, it's competitive with the LGX Lite it physically replaces, while adding\n  the sensor and RGB ecosystem that the LGX Lite lacks. It's also the correct pick\n  for builders who want their extruder to integrate cleanly with EBB toolboard\n  workflows in Klipper.\n\u003c\/p\u003e\n\n\u003ch3\u003eResources\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003ca href=\"https:\/\/bttwiki.com\/Nebula.html\" target=\"_blank\" rel=\"noopener\"\u003e\n      BIQU Nebula Wiki — Klipper config, RGB setup, filament sensor macros, G-code button config\n    \u003c\/a\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003ca href=\"https:\/\/github.com\/julianschill\/klipper-led_effect\/\" target=\"_blank\" rel=\"noopener\"\u003e\n      klipper-led_effect — animated LED effects plugin for Nebula NeoPixels\n    \u003c\/a\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\n  Browse our full extruder selection at\n  \u003ca href=\"\/collections\/3d-printer-extruders\"\u003e3D Printer Extruders\u003c\/a\u003e, or explore\n  all toolhead upgrades at\n  \u003ca href=\"\/collections\/3d-printer-upgrades\"\u003e3D Printer Upgrades\u003c\/a\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1619\/4791\/files\/1060000769-Nebula_EN_12.jpg?v=1747968050\" alt=\"\"\u003e\u003c\/p\u003e","brand":"West3D 3D Printing Supplies","offers":[{"title":"Default Title","offer_id":52735646105894,"sku":"BTT3572","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/1986\/2822\/files\/biqu-nebula-dual-gear-extruder-west3d-3d-printing-supplies-btt-7625240.webp?v=1773259412","url":"https:\/\/supplies3d.shop\/products\/biqu-nebula-dual-gear-extruder","provider":"SUPPLIES3D","version":"1.0","type":"link"}