One-coin PiggyBank

Piggy Bank in 3 sizes that can hold one coin
with satisfying click sound

Based on my Piggy and Boar

Short video:
https://www.instagram.com/reel/DYPMaR-NVFm/

Sizes
Small: for coins up to 18mm diameter and 2.45mm thickness
Medium: 22,5mm x 2.95mm
Big: 27,5mm x 3.45mm

Tested with all Polish coins (including one special, bigger)
Prepared for all Euro coins + some additional space for even bigger coins
If needed you can resize the models for different coins

Piggy is with internal springs that will hold the coin
First time after a print it may be harder to push the coin in

Update 12 V 2026
Updated models to new, better look (like in Piggy Set)
Added Boar models
Added files for a multicolor print

Print Settings

Made for 0.4mm nozzle (spring is 0.8mm thick)

There are some bridges but they are pretty short so it shouldn't be hard to print

Print with
2-3 walls
0.1-0.2mm layer height
Some infill may be usefull (7-10%)

Multicolor
To print in multicolor select a model and 2 (or 3 when printing a boar) multi files and drop all of this in your slicer
Merge models together and select colors for each
Multi files are with frames that will not be printer. Ignore model 'errors'

Body: Pink / Brown (boar)
Smile: Red / white
Eyes: Dark
Fangs (boar): White / bone