Side spool desiccant container

A desiccant box that sits on the side of the standard ~200mm spool, approx 75g of desiccant. Why on the side? While I'm a fan of in-spool desiccant boxes, I recently found that there is, in fact, little air exchange between the middle of the spool and the side of the spool if it's packed in a vacuum bag, up to the point where the center-placed hygrometer makes very little sense. Tolerances are pretty tights, so make sure your printer is well tuned. More in a video: PS: Also published on printables - https://www.printables.com/model/1370151-side-spool-desiccant-container