Dual Spool Holder

Dual Spool Holder
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A dual spool holder for those with dual extruder heads or simply after easier storage.
Measurements
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The measurements mean that this should work with any spool with a diameter of less than about 20cm, a depth of 9cm and with the internal diameter of the central hole greater than 2cm.

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Design
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Easily modular to make it into a three of even four spool holder, simply print multiples of the Central Support Strut and the requisite number of Bottom Cross Beams and Top Cross Beams.

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UPDATE
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I've removed the filament guide due to it not working as I had hoped. I will go back to the drawing board and update this once I've come up with a new solution.

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