Update February 5, 2024
Added a new set of spacers in Voronoi pattern. Available in 3, 6 and 12 mm widths. These are currently untested as all my printers are busy with a big project but they should work.
Update August 1, 2023
A few people have requested this so I've added more center rings.
There are now center rings available for spools with an inner diameter between 40 and 95 mm. The 40 mm is so slim you may need to lower the extrusion width or use a 0.2 mm nozzle.
If any other size is required just leave a comment. Cheers.
Update June 29, 2023
A funnel is available now. Download it here.
Also, the Voronoi and Solid spool types have been added to this page. The solid spool have embedded letters you can paint in a different filament color if you like (use the paint bucket tool in the slicer).
About
The Hydra AMS - Universal Spool Adapter is developed specifically for Hydra AMS but will also work well for the standard Bambu Lab AMS. If you use very narrow spools with this however, Hydra AMS will work a lot better as the feeders are tilted back a little compared to stock.
One of the main benefits of the Hydra AMS is that it allows a wide variety of spool diameters, both small and large diameter spools as well as wider spools with a spool width up to 75 mm.
But one issue remains - very narrow spools such as certain 250g sample spools and some 500g spools as well. Another issue is the more and more common cardboard spools, these are not ideal to be used in an AMS for a few reasons, cardboard debris, causing less grip on the front rollers and dirt inside the feeders and tubes. I usually recommend adding some electrical tape to the edge, it works well. But you can also use this new adapter I've developed. It's compatible with spools up to 69 mm wide with Hydra AMS as it adds 6 mm to the total spool width.
I ordered a bunch of odd sized spools just to develop this mod as it's often requested.
So what makes this different from other spool adapters?
Features
What to Print
Print the following parts in the direction I have set them, no supports are needed:
(You can use the Voronoi or Solid spool types instead if you prefer)
Next, measure the inner diameter of the spool you are using and print a couple of the center rings matching that diameter, rounded down to the nearest millimeter.
For example, if your spool's inner diameter is 52.3 mm, print two of these:
The center rings make sure the spool is perfectly centered and aligned on the Universal Spool Adapter. There are center rings for spools with a spool center diameter between 40 and 95 mm.
Also, if you have a very narrow spool (less than around 40 mm) you should use the spool spacers to widen the track so it does not hit the clear cover of the AMS front feeder. There is a 6 mm spacer available as well.
Video Guide
Assembly
If you just want to use it as a spool adapter and nothing else, for example when using a cardboard spool, simply screw the center rings on the top and bottom of the spool adapter then screw it together with the spool in between.
If you want to use it with a sample spool or another spool with a narrow footprint, first screw the spacers to the top and bottom of the spool adapter then screw on the center rings. Finally, screw it together with the spool in between.
The author remixed this model.
Universal Spool Adapter.