FreeOoze/Retraction Test
Thingiverse
7 model
Free
FreeRatrig Vcore4 Chube Air Ooze Guards
Printables
FreeQuick Retract/Ooze Test
Thingiverse
FreeSimple Zero Ooze Dual Extruder - CRUX - no electronics, motors, or changed firmware
Thingiverse
FreeFormbot3d XplorerRapido UHF Hotend Ducts and Ooze Arm Mods
Printables
FreeSlime
MyMiniFactory
FreeEnder 3 NG v1.2 discard bucket with motorized brass and silicone brushes
Printables