Press for making Ø 20 mm groundbait balls | Fishing and Baiting | BBP20

Press 20mm-diameter balls of groundbait from flours or moistened pellets.

🆔 Design No 569

⚙︎ Formats : STL

𐊵 Version : 1.2

⦸ No AI - No virus

✏︎ Designer : M@t - apiobi

🗓 Published on March 2, 2026

⊙ Views : 356

💬 Exchanges : 0

4,58 $

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Description

A press for making 20-mm-diameter groundbait balls for carp and all river and saltwater fish.
The design of this ball press has been carefully considered:

to be 3D-printable, even in PETG
to be strong
to withstand the heavy pressure exerted by the hands of impatient fishermen
to make balls!

I also use this tool to prepare vitamin-enriched food, treats, and recipes to care for my largest koi and the biggest fish in my ponds.

It is printed in just two parts, each of which includes a built-in mechanism for pressing and ejecting the ball.
This means it can be 3D-printed using the “print-in-place” method.

My designs are intended for FDM 3D printing. They are designed to meet the specific needs of anglers. They are designed, printed, and tested repeatedly under real-world fishing conditions until optimal results are achieved.

Technical Tips for 3D Printing

Numerous tests were carried out before obtaining this 3D printable model in PETG, without support, with the internal mechanism already captured in the part.
PETG recommended, ABS, ASA, PLA+.

There's no need to fill to 100%, but I recommend opting for a percentage that will support the inside of each piston, around 30% with a cubic fill for example.
Can be printed with a 0.6 mm nozzle (in my case)
At least 3 wall thicknesses

💡 Tip: once the part has been 3D printed, the mechanism may remain stuck. This is normal, don't panic 🙂
The solution is simple: use a cylindrical object with a flat edge slightly smaller than the moving part, and tap it with short, sharp strokes.
Even if you print in PETG, the part will regain its freedom... that's what tolerance is for!