Install the 2.20 Hotend on your Bambu Lab H2D

More control, maximum stability, and zero drama with flexible filaments.

1. Introduction

The Bambu Lab H2D starts with an edge few printers have: its dual extruder system. You can dedicate one head to flexible TPU and keep the other for PLA, PETG or another rigid support material. The result is professional-quality prints, with clean supports that peel away without damaging the flexible part.

Until now, flexibles especially the softest ones, forced frustratingly slow speeds. The reason isn’t temperature: a 1.75 mm flexible filament bends, compresses and loses push inside the extruder until it clogs.

The solution is the Filaflex 2.20 mm System. This is not "a harder TPU": it’s a larger-diameter filament that behaves like a stiffer column, reaching the hotend without twisting and keeping a stable push. More control, more stability and, above all, more speed and fewer failures.

In this guide you’ll turn your Bambu Lab H2D into a machine ready for industrial-grade flexibles, while keeping full hybrid compatibility with standard 1.75 mm rigid filaments.

Got a different model? Check all compatible printers:

 VIEW ALL COMPATIBLE MODELS

2. Preparation and Safety


Get ready to unlock the full potential of your Bambu Lab H2D with the Filaflex 2.20mm system. This section covers the essential tools and safety protocols required to perform a smooth hotend upgrade. By following this sequence, you will ensure a professional-grade setup, perfectly calibrated for high-speed flexible printing while maintaining full versatility for rigid materials.

Tools Required

Cutting Pliers.
Image

Recreus Installation Kit & Hand-drill
Image

Time required: 10-20 min

Key to Symbols

⚠️ Help Legend:

🟢 INFO: Useful technical background.

🔵 PRO TIP: Expert technical advice.

🔴 SAFETY: Mandatory stop to avoid accidents.

3. Step by Step Hardware Installation

Follow this sequence to integrate the Filaflex 2.20 system into your H2D. Each phase is designed to facilitate assembly and ensure flow precision. We will start by accessing the print head, followed by the specific adjustments that unlock industrial-grade flexible printing. Take your time, follow the icons, and transform your machine into a high-performance flexible powerhouse.

On the H2D we only work on the right head; the left one is untouched. Before starting, remove any object from the top to take off the glass and work with free access from above.
Step 1: Unload the filament

Action 1: If filament is loaded, unload it so you can remove the hotend. Do it from the screen, as usual.

 Image

🟢 INFO: Even though we only modify the right head, we recommend unloading both filaments to work more comfortably.

Action 3: Turn off the power switch at the back and unplug the power cord.

 Image
Step 2: Lower the bed

Action 1: With the filament unloaded, go to the Control tab, Motion XYZ (you may need to perform a homing procedure first)

 Image

Action 2: Next, press -10 to lower the heatbed along the Z-axis so you can work comfortably.

 Image

Action 3: Lower the bed by at least 260 mm to create enough space to work comfortably.

 Image
Step 3: Remove the top glass and release the PTFE tube

Action 1: Take off the top glass cover.

 Image

Action 2: Release the Teflon tube from the back by pressing the buffer fitting.

 Image

Action 3: Release the right Teflon tube by pressing down on the top of the extruder.

Image

🟢 INFO: Removing both Teflon tubes from the extruder will make it easier to work.
Step 4: Remove Front Extruder Cover

It’s the part protecting the extrusion system at the front.

Image

Pull from the top to separate it.

 Image
Step 5: Hotend Removal

🔴 Select the right head on the screen and check it’s cold. Only handle it cold.

Action 1: Select the right nozzle in the control panel to activate it so you can remove the hotend.

 Image

Action 2: Remove the protective silicone strip from the hotend.

 Image

Action 3: Open the support/clip that holds the hotend in place. Pull the right hotend out of the printer.

 Image
Step 6: Enlarge the RIGHT Filament Channel

This is the only extra procedure and it’s done just once: it makes your printer compatible with the 2.20 mm system in hybrid mode (1.75 and 2.20 at the same time).

🟢 INFO: This does NOT affect your prints or their quality. We just gain a few microns so the 2.20 passes freely. No delicate part is touched: it’s a simple plastic passage, lower and upper.

As shown in the following image of the disassembled extruder, both parts are made entirely of plastic, so don’t worry, no electrical or delicate components will be affected.

Image

Action 1: Prepare the tool. Mount the drill bit in the included handle, leaving it as extended as possible for better access.

 Image Image

Action 2: Upper right side (first). Activate the right head on the screen selector.

 Image

🔴 SAFETY: Turn off the printer.

 Image

Action 3: Insert it as parallel to the filament inlet as posible and turn very gently. The bit makes its own way; don’t force it.

Image

Keep going until you can see the drill bit through the indicated hole.

That’s your signal to stop and extract it by turning the opposite way.

 Image

Action 4: Reposition for the lower part. Turn on the printer.

Action 5: In the control panel, press the left button on the screen to have the system move to the left side and set it as the primary hotend.

 Image

🔴 SAFETY: Turn off the printer.

 Image

Action 6: Then turn off the H2D and disconnect power. With the printer off, manually move the flow blocker from the right side to the left.

 Image

Action 7: Lower right side. Repeat from below: vertical bit, gentle turn, advance until you can see the drill bit through the indicated hole.

 Image

That’s your signal to stop and extract it by turning the opposite way.

 Image

🔵 PRO TIP: You can store the tool away; you won't need it again.

🟢 INFO: By doing this, we gain a few microns of space so the 2.20 filament passes easily, without affecting precision when printing with 1.75 mm.

🔴 SAFETY: Any physical modification may affect the manufacturer's official warranty; proceed at your own responsibility.
Step 7: Extruder Channel Cleaning

Blow or use a blower to remove chips or plastic debris from inside the channel.

 Image

Clean the shavings from the printer base as well.

 Image
Step 8: Install the Recreus 2.20 Hotend

Action 1: Open your new Recreus 2.20 Hotend and same process as the standard
one, in reverse. Place the hotend from the kit in position and secure it firmly so it’s well fixed.

 Image

Action 2: Replace the protective silicone sock. Manually move the flow
blocker from the left side to the right.

 Image
Step 9: Reassembly

Remount the cover. Put the extruder
front cover back and leave everything as it was.

 Image
Step 10: PTFE Tube

Option A: Bypass connection (rear TPU inlet). The H2D has a dedicated rear bypass inlet for flexibles.
Place the original Teflon tube into the right extruder using that rear bypass hole. Put the spool on the side holder and you’re set.

 Image

Option B: Short PTFE + side dryer (our favorite). Place a short PTFE section at the right extruder inlet and feed filament from a side dryer. Use the holder we designed (downloadable at recreus.com): compatible with several dryers, it lets you feed and dry the flexible at once. Find it below.

 Image Image Image

🔵 PRO TIP: Option B keeps the TPU dry from the first to the last
layer: less stringing and better adhesion.
Step 11: Load & Purge

🟢 INFO: In this case and with flexibles, it is recommended to load the material manually. Let's see how it's done.

Turn on your 3D printer to start the final configuration process.

 Image

When working with the 2.20 system, we recommend introducing the filament manually initially.

 Image

From the control tab of your Bambu Lab, heat the nozzle to 250°C.

 Image

Activate the extrusion controls (clicking the down arrow) while pushing gently to perform a full purge and clear any residue from the channel.

 Image

🔵 PRO TIP: If the purged material flows in a steady, continuous thread, your installation is 90% successful!.

 Image

4. Slicer Configuration

To get the most out of the Filaflex 2.20 system, your software settings must match the new hardware capabilities. Download Filaflex profiles for Bambu studio.

Import Filaflex 2.20mm printing profiles in few seconds.

Download our Filaflex 2.20mm printing profiles.

🔵 H2D GOLDEN RULE: The 2.20 flexible material ALWAYS goes in the right nozzle. Assign it to the right nozzle before slicing.

How to Use PLA/PETG Support + Filaflex 2.20 on Bambu Lab H2D:

Dual Extrusion Tutorial

Image Image

Direct-Feed Dryer Support – Keep TPU Dry While Printing

Our custom Filament Dryer Support allows you to print directly from your dryer, ensuring your filament stays bone-dry from the first layer to the last. Compatible with most printer setups!

✅ Reduce stringing

✅ Improve layer adhesion

✅ Print directly from the heat source

🔗 Download the 3MF now and start printing perfect flex!

 Download