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Make a pocket abacus from an empty Altoids tin. The original low-tech calculator, now in pocket size! Great for calculating tips in restaurants, as long as your check ...
Materials needed: Empty Altoids tin small colored beads wire an awl Optional: spray paint, craft paint
This abacus will have 9 columns (9 digits). You can calculate up to 9,999,999.99 if you use decimals, or up to 999,999,999 if you only use whole numbers. ...
An optional step is to paint the Altoids tin. I spray painted mine black. You may also want to paint the inside or glue a piece of light ...
I find it easiest to start stringing at the bottom right corner. Cut a piece of wire 36 inches long. Thread the wire through the first and second ...
Continue to string the wires and the beads in the successive holes, from right to left. Make sure to keep 7 beads on each wire and to keep ...
Last, you need to add a divider between the heaven beads and earth beads. This is called the beam. I've used a thicker wire for the divider, string ...
Now your abacus is finished, and here are some examples of the abacus in use.
Divide with Abacusby knewman126
pocket abacusby mikeasaurus
Chinese Abacusby rlopez21
Recycled Cookie Tinby Ami9702
Recycled fish-tin desk tidy.by AndyGadget
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