Archery Thumb Ring

thingiverse

There are two fundamental models available: Big Shelf and Small Shelf, both featuring either rounded or pointed ends. If your thumb falls within the average size range, opt for the round version; however, if your thumb is unusually long like mine, choose the pointed one and adjust it to fit by sanding. The ring is designed to accommodate a 21 x 17 mm thumb. By scaling both dimensions accordingly, you can easily resize it to suit any thumb size.