Groundbait Spoon Launcher - Fishing Feeding tool

This is a 3D printable groundbait spoon designed for long-distance fishing baiting. It converts standard plastic pipes into a functional bait launcher, allowing accurate and efficient groundbait delivery.
 

The system is modular and available in two main configurations:

20 mm PVC pipe version (rigid outdoor electrical conduit):

• Spoon head designed for press-fit mounting on 20 mm rigid PVC pipe (electrical conduit version)
• Two print variants:
  • 0.4 mm nozzle version (faster printing, easier setup, slightly less surface quality)
  • 0.2 mm nozzle version (recommended: smoother finish, longer print time)
• Optional ergonomic handle included (optimized only for 0.4 mm nozzle profile, but can be resliced for 0.2 mm if needed)

32 mm PP drainage pipe version:

• Spoon head adapted for 32 mm polypropylene drainage pipe
• No dedicated handle included (the pipe size already provides sufficient grip)
• If needed, the 20 mm handle design can be scaled up for experimental use

Fit and assembly notes

• Fit has been tested on hardware store standard pipes
• Spoon heads use a tight press-fit connection
• A small amount of cyanoacrylate (CA glue) is recommended for permanent assembly
• Handle fit is intentionally slightly looser to allow easier assembly; glue is also recommended here

Printing recommendations

• Prototype tested in PLA only
• PLA is suitable for testing but not ideal for long-term outdoor use
• For real fishing conditions, PETG or PCTG is strongly recommended for improved mechanical strength and thermal resistance
• Handle prints without supports
• Spoon head requires supports (although unsupported printing may work depending on slicer settings, it has not been validated)