How to Make a Abacus from Cardboard

Step 3: Making the Abacus B

Mark your box horizontally at equal distances with a ruler.

To work out the distances between the beads first count the
number of units you wish to place horizontally across the width of the box.

Next measure the width of the box across.
Divide this by the number of wires you chose.

Poke a hole at each marked spot.
Also poke holes after marking the central wall.

Using the narrow-nosed pliers loop one end of each wire in a spiral loop.

Insert through each hole at the bottom of the box.