Ender 3 stock mount for Filament Spool Holder

Couldn't find a good way to mount the spool holder with the stock Ender 3 spool mount extension. Thought someone out there might want to do the same thing.

Need two of the small nuts for the stock mount.

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Added a shortened version of the spool rod. This fits better for regular width spools and lowers the total torque that the mass of the spool can produce.