A 3D printed method feeder (also known as "Sosca" or "Smoktukha" in Russian fishing tradition) — a classic bottom fishing rig where bait and groundbait work as one.
How it works:
The feeder is packed with sticky groundbait mixed with hookbait (maggots, worms, or dough). Short hooklinks (8–10 cm) are buried inside the bait ball. When the fish begins to feed, it sucks in the bait and self-hooks against the rod resistance.
Features:

Circular cup design with 4 inner posts to grip the bait ball securely
Side arm for line attachment
Center hole for hooklink exit
Two sizes: Ø 40 mm (light/still water) and Ø 50 mm (heavier bait load)

Print settings:

Material: PETG or PLA+
Infill: 30–40%
No supports needed

Target species: Bream, Carp, Crucian carp, Tench