Yarn Spool
thingiverse
I make this spool to save my power cord, here I'm putting 20 meters of AWG 22. My filament end in the final of my print :( but you will not have problem when print. I print with 0,2 layer height, 2 perimeter and 5% of infill. Don't use support, the max overhang is 62°, you'll not have problem with this.
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