Soroban ======= The soroban is an abacus developed in Japan. It is derived from the ancient Chinese suanpan, imported to Japan in the 14th century.[1][nb 1] Like the suanpan, the soroban is still used today, despite the proliferation of practical and affordable pocket electronic calculators. https://en.wikipedia.org/wiki/Soroban

Design

This design was made in openscad. The rods that hold the beads are made from 1.75 mm filament.

Assembly

Feed a short length of filament through the frame and add the beads one by one. Once complete cut the filament to length and use a blob of glue to secure.

Tweeks

It may be necessary to change the hole size of the beads dependent on how accurate your printer is.