February 14, 2026
Description
It's an abacus that's customizable. The bars can be smooth or have small ridges. Customize it anyway you want. It can go from a 1x4 all the way to a 2x5.
The bars are locked in by (9) M3x6 Allen hex screws.
License:
Creative Commons - Attribution - Non-Commercial - Share Alike
ke5etc
