Wanhao Duplicator 4 (Possibly others) Spool Guide Addon
thingiverse
The Spool Holder Addon for Wanhao Duplicator 4S printers, compatible with other machines featuring a 50mm diameter, 96mm long filament spool guide, is designed to securely hold any 50mm diameter holed spools in place. This prevents them from rubbing against the back of the printer, ensuring a smooth and stable printing experience.
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