Hydra - Enhanced Bambu Lab AMS 2 PRO (Single Piece - For Large Printers)

Notice!

This is only compatible with the AMS 2 PRO. Please view my other designs for designs supporting other AMS systems, there are plenty.

Update August 5, 2026 

Hydra has been updated to version 1.03. Changes:

• Optimized internal filament hub / rear motor position.

• New RFID holders that slot into the printed main part; improved RFID performance.

• Support for (upcoming) cover set, suitable for top mounted heaters. 

• The upcoming cover set includes covers for the feeders, PTFE tubes and motor, shielding the electronics from direct heating.

• Support boxes integrated in the design so they can't accidentally be moved and merge with the main pieces. The support boxes are set to just 5% infill and 1 wall for the print profiles.

• There is also a version completely without support boxes, you can use this if you want to use your own custom supports.

Please use the print profiles if you can, they're tried and tested with correct print settings and supports.

Update May 29, 2026 

Minor update, bringing the version number to 1.02. Changes: 

• Front roller slots widened slightly.

Update January 26, 2026

Hydra has been updated to version 1.01, it's the first update of the series for the AMS 2 PRO and comes with some nice improvements.

Changes:

• Rebranding, Hydra 2 AMS is now known as Hydra - Enhanced Bambu Lab AMS 2 PRO to avoid confusion and for which AMS system this is for.

• Feeders tilted back to clear very full spools (avoids very full spools hitting the feeder or load button).

• Larger and redesigned cutouts for the PTFE tubes (replaceable from top).

• Improved rear roller positions, allowing for slightly larger diameter spools.

• Improved drying capacity / larger vent holes.

• Optimized Hydra tray position and placement of the front locking tabs.

• New built-in support boxes, these prevent the side walls of the main print from warping. Previously, the supports were just low infill waste prints but these new boxes are very much usable (and stackable!), there will be containers and add-ons for these soon, see the second pic below, the orange boxes. You must still use some manual supports, see instructions below. If you're uncertain, please use the print profiles where all of this is prepared.

Buy Hydra

I've teamed up with a few different stores around the world offering the printed parts and everything you need for the build so you won't need anything outside of the kit:

• MatterHackers (United States)

• VisionToCreate3D (EU)

Hydra has a strict non-commercial license, it can only be sold with licensing through Hume Beam Engineering Solutions. 

About

Optional but recommended files to print:

• High Capacity AMS Silica Dry Box to keep filament dry. Compatible with both Hydra and Bambu Lab AMS.

• Adjustable Spool Holder for Silica Gel / Spool Weight - Compatible with both Hydra and Bambu Lab AMS. 

This is a remix of the current Hydra but for large printers with a +300 mm wide print bed. If you have a 350 mm wide bed or larger you can print it normally and do not have to rotate it, if your bed is 300 mm wide exactly you need to rotate it 45-50 degrees in order for it to fit. 

You can print it diagonally as I have set it on a Bambu H2D for example.

Assembly Guide

View the assembly guide on the page below or by downloading the PDF in the files section.

Hydra - Enhanced Bambu Lab AMS 2 PRO

Print Settings

Print the parts in the direction I have set them. I recommend using a wide brim for improved bed adhesion and Nano Polymer if you have some. The parts are tall and quite narrow. I recommend using 4 walls and an infill of 30% for the main parts.

Hydra have built-in support boxes to prevent warping, do not remove these! Instead set the wall count to 1 wall and use an infill of 5% to save some material on these (using the Object settings in the slicer). If you're uncertain just print the Print Profiles I've made where this is all prepared. 

Support

All my designs and mods on Printables are free to use and remix. They have a non-commercial license. If you enjoy this or any of my other designs you can send me a small donation using the link below. Thanks :)

https://www.paypal.me/humebeamengineering

If you prefer Crypto/BTC you can send me a message.

If you send a donation be sure to mention Hydra 2 AMS in the comments box and you will be assigned a serial number.

Rear Roller Positions

 Hydra has a number of rear roller positions so it's suitable for almost all spools.

• The default rear roller position, suitable for almost all 1 Kg spools is marked in blue below, it's where the rear roller is placed at the moment.

• If you have slightly larger spools, just above 200 mm in diameter, try the position marked in red.

• If you have slightly smaller spools, between 195-200 mm spools, try the position in marked yellow.

• The rest of the spool positions are for even smaller spools.

Click the image to get a larger version.