Rx projects V2 - a cool Voron toolhead

This might be your Voron's coolest mod!
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updated November 27, 2025

Description

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View the model in 360  here 

 NOTE⚠ ⚠.   The new version 2.6 and future versions, including full STEP files, are now completely free on my Makerworld, as their points system works better. Please remember to support me there!
Sorry for the inconvenience of changing platforms, but creator rewards are important for us to keep making new projects.

The .STL/.3mf  is completely free here, and some step files if you need to adapt a different type of probe

Support the project and get access to all STEP design files on my Patreon   (if you already purchased V1 files, you have full access to V2 files)

πŸ”— Hop into the Discord

 If you’re chasing top-tier print quality without breaking the bank, this DIY A1-style and H2D is a game-changer. β€” It’s modular, efficient, and full of smart upgrades that rival even the original.

βœ… Why Build One?

   β€’    Compatible with bambu A1, H2D,P1P,P1S hotned.
   β€’    Incredible print quality β€” Fully compatible with Bambu slicer profiles
   β€’    Quick-swap nozzles β€” Get back to printing in seconds
   β€’    Modular design β€” Upgrade and replace parts with ease
   β€’    Integrated filament sensor β€” Internal and reliable
   β€’    Auto filament loading + single-button unload β€” Smooth and user-friendly
   β€’    Lightweight toolhead β€” Perfect for input shaping and high-speed accuracy
   β€’    Affordable parts β€” Clone components are widely available and budget-friendly
   β€’    Consistently reliable β€” Solid mechanical structure, built to last
   β€’    Looks clean & professional β€” Not your average DIY toolheads 
 


  •  

What’s new

V2

βœ‚ New filament cutter – integrated with a Bambu-style cutter blade for reliable and precise filament trimming.

βš– Optimized wall thickness – reduced across most parts, making the toolhead lighter and better suited for input shaping.

πŸŽ› Filament sensor repositioned – now mounted on top for easier access and to free up space for the filament cutter.

🌈 Neopixel LED wire guide – added for cleaner cable management and a more organized setup.

πŸ”§ Carriage refinements – improved ducting and minor structural adjustments for better overall performance and durability.

V2.1

🌬 Duct system upgrade – optimized cooling performance and made installation even easier.

🧩 Carriage improvement – updated design for better Micro Probe compatibility.

 

It’s an evolution. πŸ”§πŸ’¨
 You’ll be surprised how it performs
 This printhead requires CPAP cooling

   After installing, here is the new Rotation distance for A1 gear [rotation_distance: 4.7123281892773 ]

 

 

I chose the A1 single-gear extruder because it consistently produces cleaner surfaces and fewer gear marks than dual-gear designs. Fewer mating teeth and a simpler filament path mean less micro-slip, lower backlash and fewer vibration/feeding artifacts β€” which is exactly what PRINTING PERSPECTIVE showed in his tests. In practice (with my RX toolhead), the A1 extruder gear gives almost no visible VFAs on prints and handles flexible filaments more gently than the dual-gear alternatives.

 

 

 

 


 

 

I did a video in another version I made for my A1 mini clone. If. If you need some idea how it works, check it 

HERE

BOOM

Note: All links are provided for convenience. Buy if you want buy from them or you can find your own buying source.

# πŸ›  Printhead Parts List

 

This is a curated list of components used in the printhead build, organized by category.  

Links are provided for reference (Amazon, Bambu Store, Alibaba, etc.).


πŸ”₯Hotend & Heating Components

H2D Heating Assembly β€“ Amazon | Bambu Store

H2D High Flow Nozzle β€“ Amazon

A1/A1 Mini Hotend β€“ Amazon

A1 Hotend Heating Assembly β€“ Amazon

X1/P1P Hotend β€“ Amazon

X1-C Thermistor & Cartridge Heater β€“ Amazon

 

βš™ Extruder & Drive Parts

A1 Original Extruder Gear β€“ Amazon

A1 Extruder Gear (After-market) β€“ Amazon

X1/P1 Extruder Motor (they are different than other stepper the gear head is twisted) β€“ Amazon

Extruder Ball Bearing MR104 β€“ Amazon

Filament cutter Blade  -  Amazon | Bambu Store

πŸŒ€ Cooling & Fans

Hotend Cooling Fan 25Γ—25Γ—10mm β€“ Amazon 1 | Amazon 2

 

πŸ›  Motion & Mechanics

Spring β€“ Amazon

(πŸ’‘ Tip: For the  Filament cutter spring you can use any pen spring just chose the strongest one)

M3Γ—20mm Dowel Pin β€“ Amazon

6Γ—2.5 Magnet β€“ Amazon

 

πŸ”© Hardware & Fasteners

Metric Screws Kit β€“ Amazon

 M3*4*4.2  Heat Set Inserts β€“ Amazon

 

πŸ–² Switches & Sensors

Micro Switch – Amazon

3.5 mm Ball Bearing β€“ Amazon

πŸ’‘ Tip: If available, you may also reuse the 3.5 mm balls found inside some 5 mm T-slot nuts.

BIQU MicroProbe β€“ Amazon

 

πŸ”Œ Electronics & Boards

BIGTREETECH EBB36 CAN Bus β€“ Amazon

 

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