3-digits flat counter 
 

The counter moves in steps, it ‘locks in’ on a digit and it will not move by itself

Weak wheels are... weaker. Doesn't need so much force to move but are much easier to break so don't push it too hard
Using PET-g may make them stronger

The middle digit is harder to move as you don't use both a forefinger and a thumb but only a forefinger. You can try to use both forefingers or a nail if needed

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Assemble it upside-down. You have markings on top part and on all wheels - all wheels are different and must go in the right place

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If you will want to sell prints of this models you can buy a commercial license
Check a Linktree in my bio

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Printing tips

Made for 0.4mm nozzle
Can be printed with 0.2mm layer height, printing with 0.1mm shouldn't make any difference
Printed with 10% gyroid infill and 2 walls with PLA

Something like PET-g recommended for 'weak' versions - will be more 'springy' and harder to break

Change colour on 1,8mm high - you will have digits (and some parts of the top and bottom) in different color

To make customizations (# or numbers from -3 to +3) add the model to top or bottom part as negative volume or as normal model with different color (for multicolro printers)

The force needed to move the wheels depends on filament, printer calibration and slicer settings
If it's too hard to move wheels you can use a weak spring wheels versions (it's 0.4mm thick instead of 0.8mm) or a horizontal expansion (xy compensation) - maybe something like -0.02 or so will help
Resizing the models may help too. You can try like 100.5% for easier or 99.5% for harder rotating

I think you can resize the models to 50% to use less filament but it should be still usefull (print normal versions then, not 'weak')

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