AMS Pi Plus Filament Dryer (Replaces Top Lid)

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Have you been eyeing the newly announced Sunlu AMS heater but don't want to shell out the money? Have a Space Pi Plus sitting around? Well, you have found your solution.

This is a passion project that I have been working on for a good bit of time now. I have gone through dozens of test prints and roughly 10 spools of filament before finally achieving the perfect design. This mod not only adds more functionality to your Space Pi Plus dryer, but your AMS too. I also have plans to add compatibility with other dryers on the market, as well as a standalone custom build!

 

I designed this as a modular print so if something wears out or breaks over time, it's very easy to print the exact part you need. I also plan on adding more to this in the future (such as an incorporated desiccant basket in the lids) and I promise all changes made in the future will be backward compatible with the original release. All screws and hardware can be reused from the Space Pi. You only need to source FOUR M3x6 screws to secure the heater ducts to the main body!

 

If you have any questions, please feel free to reach out!

DISCLAIMERS AND ASSEMBLY NOTES (READ THOROUGHLY):

• This print requires EXTREME precision and is fairly difficult to pull off. MAKE SURE YOUR FILAMENT IS CALIBRATED AND ABSOLUTELY USE GLUE ON THE PLATE FOR THE MAIN BODY PARTS! If you experience warping, it is not because of the profile. It is because of your pre-print setup!
• This mod DOES NOT require you to physically alter your AMS but DOES require slight disassembly and is fully reversible. I am NOT responsible for any damage that may occur.
• To see how to disassemble the Space Pi (DO NOT MODIFY OR DRILL HOLES IN THE AMS AS THE VIDEO SHOWS), you can find a video here: https://vm.tiktok.com/ZGdNbEkQw/

• To find out how to take the AMS lid off, you can find the instructions here: https://wiki.bambulab.com/en/x1/maintenance/replace-ams-bottom-cover 

  NOTE: After removing the lid, pull the metal axles/rods out to reuse them. They are in there very snug but will come out with some effort.

• I recommend gluing the clips in place to keep them from potentially falling out over time. They are designed to be a snug fit, but every printer has slight differences in its tolerances and glue can help remedy this.
• PETG is in the profile for a wider audience, but I recommend ABS/ASA at minimum. I did test thoroughly with PETG though and it holds up just fine. Just be careful not to heat for too long or set too high (keep around 55-60° at max).
• Please keep in mind that the temperature readout on the Space Pi display may not be 100% accurate due to the nature of how the sensor is mounted. If you find your readings slightly off, you can remove the temperature sensor from the board and solder some wires between the sensor and the board to re-route it into the filament chamber.
• I recommend gluing the gaskets onto the parts they are mounted to. If you don't have TPU, you can use heat tape or silicone instead, though I cannot guarantee the finished product will work as good. If you choose not to use the included TPU gaskets, you MUST use a gasket that is EXACTLY 1mm or else the parts will not fit together.
• This mod does not necessarily require the use of desiccant, though it is absolutely recommended. The Space Pi series does not offer a proper way to force humidity out of the unit thus requiring desiccant to capture released moisture. This unit will function the exact same (though I have added “sealing screws” to the lid to help release any moisture and give proper ventilation while in use).