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Powerful Rapido UHF Hotend for 1.75mm filament, ultra high flow 3D printing, fast heat-up performance, Rat Rig V-Core 3 builds, Voron-style printers, BLV Cube projects, and custom DIY machines.
$136.95
7 in stock
The Rapido UHF Hotend is an ultra high flow 3D printer hotend designed for performance-focused builds using 1.75mm filament. It is built for high-speed printing, larger flow demands, fast heat-up performance, and advanced DIY printer projects where a standard hotend may limit material output. This hotend is especially relevant for Rat Rig V-Core 3 builds, Voron-style printers, BLV Cube projects, and custom high-performance 3D printers.
Your current dnb3D product page lists this hotend with a high-power cylindrical ceramic heating element up to 115W and a heat-up time from 24°C to 280°C in less than 51 seconds. It can be configured for both standard M6 threaded nozzles and M6 threaded Volcano nozzles, giving builders flexibility when choosing between standard nozzle formats and higher-flow Volcano-style printing.
The Rapido UHF Hotend is intended for users who want more flow capacity for faster print speeds, larger nozzle sizes, thicker layers, and demanding filament output. Ultra high flow hotends are useful when the printer motion system, extruder, cooling, slicer profile, and filament can support increased material delivery. For high-speed printing, the full printer setup matters, not only the hotend.
This hotend uses a high-power cylindrical ceramic heating element rated up to 115W. Your product page lists a heat-up performance of 24°C to 280°C in under 51 seconds. Faster heat-up can reduce waiting time and support stable temperature recovery during high-flow printing, especially when paired with a properly tuned printer, firmware, and power system.
The Rapido UHF Hotend can be configured for standard M6 threaded nozzles or M6 threaded Volcano nozzles. This gives the user flexibility when choosing between everyday nozzle setups and larger melt-zone Volcano-style printing. The kit includes one of each 0.4mm nozzle and both silicone socks, helping builders configure the hotend for their preferred setup.
This hotend is designed for 1.75mm filament systems. It can be used with a wide range of compatible materials depending on the full printer configuration, nozzle material, temperature requirements, extruder capability, cooling setup, and slicer tuning. Always confirm filament compatibility with your hotend, nozzle, thermistor, heat break, firmware limits, and printer wiring before use.
Your current product page notes that the Rapido UHF Hotend comes as the default hotend for the dnb3D Rat Rig V-Core 3 standard kit. It is also a popular style of hotend for Voron-style machines, BLV Cube projects, and other DIY printer builds where high flow, compact packaging, and fast heat-up are desirable. Always confirm mount compatibility, wiring requirements, firmware settings, and printed part fitment before installation.
The kit includes the pre-assembled Rapido hotend, groove mount adapter, M2.5 mounting screws, tube collets with clips, a T-V6 plated copper 0.4mm nozzle, hexagon wrench kit, HF silicone sock, thermistor extension cable, and heater extension cable. Your current page also includes a TriangleLab test sheet reference.
For related components, browse the 3D Printer Parts category, the Nozzles category, or the Extruders category. This hotend can be paired with V6 nozzles, Volcano nozzles, silicone socks, thermistors, heater wiring, extruders, motion parts, and printer frame hardware from dnb3D.
For additional manufacturer-style information, testing details, and compatibility context, review the TriangleLab Rapido hotend technical reference before installation or firmware configuration.
Every order is hand-inspected and precision-shipped from dnb3D in Marathon, Ontario. Whether you are building a Rat Rig V-Core 3, upgrading a Voron-style printer, tuning a BLV Cube, or assembling a custom high-flow machine, this Rapido UHF Hotend provides a powerful hotend platform for demanding 1.75mm filament printing.
The Rapido UHF Hotend is an ultra high flow 1.75mm 3D printer hotend with a high-power ceramic heating element, fast heat-up performance, and flexible M6 or Volcano nozzle configuration.
| Product Type | 3D printer hotend / ultra high flow hotend |
|---|---|
| Hotend Model | Rapido UHF Hotend |
| Filament Diameter | 1.75mm |
| Flow Class | Ultra high flow / UHF |
| Heating Element | High-power cylindrical ceramic heating element |
| Heater Power | Up to 115W |
| Heat-Up Performance | 24°C to 280°C in less than 51 seconds |
| Nozzle Compatibility | Configurable for standard M6 threaded nozzles and M6 threaded Volcano nozzles |
| Included Nozzles | Includes one of each 0.4mm nozzle configuration, based on current product page description |
| Included Silicone Socks | Includes both silicone socks for supported nozzle configurations |
| Common Printer Fitment | Default hotend for dnb3D Rat Rig V-Core 3 standard kit; also useful for compatible Voron-style, BLV Cube, and DIY printer builds |
| SKU | DB-0025-4860 |
| Common Applications | High-speed 3D printing, high-flow extrusion, Rat Rig V-Core 3 builds, Voron-style printers, BLV Cube projects, custom DIY printers, prototype printing, and performance printer upgrades |
| Installation Warning | Confirm mount compatibility, wiring, thermistor type, heater power support, firmware settings, nozzle configuration, and printer voltage before installation. |
| Fulfillment | Hand-inspected and precision-shipped from dnb3D in Marathon, Ontario, Canada |
| Rapido Hotend Pre-Assembled | 1 piece |
|---|---|
| Groove Mount Adapter | 1 piece |
| M2.5 × 5 Screws | 4 pieces |
| M2.5 × 8 Screws | 4 pieces |
| Tube Collet with Clips | 2 pieces |
| T-V6 Plated Copper Nozzle 0.4 | 1 piece |
| Hexagon Wrench Kit | 1 kit |
| HF Silicone Sock | 1 piece |
| Thermistor Extension Cable | 1 piece |
| Heater Extension Cable | 1 piece |
Before installing the Rapido UHF Hotend, confirm that your printer mount, carriage, duct, extruder, firmware, wiring, and cooling setup are compatible. This hotend is used in high-performance printer builds, but fitment depends on the exact machine, printed parts, and configuration.
This hotend uses a high-power ceramic heating element rated up to 115W. Before powering the hotend, confirm heater voltage, thermistor type, firmware temperature sensor settings, maximum temperature limits, PID tuning requirements, and wiring polarity where applicable. Incorrect wiring or firmware setup can damage the printer or create unsafe heating behaviour.
The Rapido UHF Hotend can be configured for standard M6 threaded nozzles or M6 threaded Volcano nozzles. Make sure the correct nozzle, silicone sock, and hotend configuration are used together. Mixing incompatible nozzle lengths or socks can cause poor heating, filament leaks, incorrect Z offset, or clearance issues.
Follow the hotend manufacturer’s procedure for installing and hot-tightening nozzles. A nozzle that is not seated correctly can leak molten filament around the heater block or heat break. Use controlled torque and avoid damaging the heater block, nozzle, heat break, or thermistor wiring.
After installing or changing heater hardware, run the appropriate PID tuning or firmware calibration for your printer. Start with conservative print speeds and flow rates, then tune temperature, extrusion multiplier, pressure advance, retraction, cooling, and speed for your filament and nozzle size.
Ultra high flow performance depends on the full printer system, including extruder grip, filament path, nozzle size, melt zone, cooling, slicer settings, and motion capability. Do not assume the hotend alone guarantees high-speed printing. Increase flow and speed gradually while watching for under-extrusion, heat creep, poor layer bonding, or skipped extrusion.
Check heater and thermistor wires regularly for abrasion, loose connectors, heat damage, or strain near the toolhead. Inspect silicone socks for damage, poor fit, or filament buildup. Replace damaged socks or wiring components before they affect print reliability.
Keep the nozzle, heater block, and silicone sock area free from burnt filament, plastic buildup, dust, and debris. Clean carefully using printer-safe methods. Avoid scraping wires, ceramic heater surfaces, thermistor leads, or delicate hotend components with sharp tools.
Every order is hand-inspected before shipping. dnb3D precision-ships hotends, nozzles, motion parts, and 3D printer hardware across Canada from our Ontario facility, helping Rat Rig, Voron, BLV Cube, and DIY printer builders receive clean, usable parts ready for careful installation.
At dnb3D, we don’t just ship boxes—we manufacture solutions. Operating our Industry 4.0 micro-factory in Marathon, Ontario, means your order is handled by the same people who design and test these components.
Ready to Ship (3D Printer Parts & Hardware): Finished, inspected, and on the shelf. Dispatched within 1 to 2 business days.
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We ship nationwide across Canada and the USA. Centrally located on the North Shore of Lake Superior, we are uniquely positioned to get your products moving quickly to either coast.
We stand behind every weld, cut, and print. If a product doesn’t meet your expectations, contact the Hub within 30 days. If we wouldn’t put it in our own shop, we won’t let it sit in yours.
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