Abacus PIP

The STL files are for a soroban abacus which has a single five bead in the upper row, and 4 one beads in the lower row. Together they can make values from 0 to 9 for 10 digits.
https://youtu.be/w8pfEi-Vnzc?t=48

Other variations may be made using scad file in the zip archive. The files works with the latest version of OpenSCAD. It's an opensource application. https://openscad.org/
If anyone can remix the programming so that it works in Customizer, that would be greatly appreciated.

STL files ending in 1LH are for a layer height of 0.1 mm.
STL files ending in 2LH are for a layer height of 0.2 mm.

The files with roomy have more space to move the beads which is useful if using in-between positions to represent alternat bases or mathematical operations. See the pdf.

The files with Base in the name are frames that can support the abacus above the underlying surface so that moving the abacus is less likely to disrupt the beads.

Provided good bed adhesion, these models will print without any support material or brims.