My copy of a Finger Reel!
printed at around 75% give the right size.
i simple file down the two middle surface and glue them together.
i use masonry cord and a 2$ double lock snap from the hardware store.
total cost around 5$!!!
very useful for all kind of situation
i personally use it spearfishing to anchor my buoy temporarily at a spot while i roam around un-tethered. classically those finger reel are used to send a marking buoy up while a diver is preparing to surface. normally sold for 30$ so its worth making!
The author marked this model as their own original creation.