To solve the issue of base warping, I had to rethink the spool support structure. I came across a floating-style filament holder design that immediately caught my attention. It uses very little material—just over 40 grams—and the entire spool is suspended above the base. This leaves a large open space underneath, which is perfect for integrating a new heating and fan module. More importantly, it avoids direct contact between high-temperature components and the printed supports, significantly reducing the risk of heat-induced deformation.
After printing and testing the model, I realized it was originally designed for a 4.5L container, which made it incompatible with my 5.8L storage box due to the larger spacing. So I modified the model and released a new configuration to fit the sealed container I have on hand. I also redesigned the side supports that attach to the container walls. The original version relied solely on double-sided tape, but I was concerned that the heat inside the dryer might weaken the adhesive. Therefore, I added two M3 screw holes so the structure can now be firmly secured to the container using screws—making the installation much more stable and reliable.
I uploaded the model files to MakerWorld (4.5-5.8L Container Hanging Filament Spool Holder), In actual use, the rotation is extremely smooth. The suspended design leaves a large space underneath to accommodate various additional components. Of course, it also has some drawbacks. For example, aligning and attaching the two support arms symmetrically to the container walls requires some precision and skill. I plan to design a measuring and positioning tool to make this process easier in future updates.
Another issue is that the current modified axle may not perform consistently across containers of different sizes. I’m considering redesigning the fixed bearing structure to allow adjustable width, making it adaptable to a range of container sizes.
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