Dry Box variant

Almost exactly the same as the remix source, with the exception that the frame has been 'extended' to fit a Creality 1Kg cardboard reel, so the reel just clears the frame at the top but allows more room at the bottom of the box to make space for more silica gel beads, _and_ the bearing holders on the frame have a small lip to stop the bearings dropping out when removing from the box... _and_ the spindle is a single piece that also is designed to snugly fit a Creality reel.
The original design had a split, chamfered spindle which did not let the reel run smoothly on the bearings and particularly the Creailty reels would hang too low and flop around.
I tried a number of ideas for 'universal' self-centred spindles, but all had some drawback - better just to resize this spindle diameter (leaving the bearing pegs alone) and print this one for a particular reel and use that.
I also had an idea to make the spindle hollow and with a 'cage' in the centre to hold silica gel but that got too comp