Plans for building a three-column LEGO abacus; suitable for ages 7 and up
Parts
I used the following two kits to get parts I needed to build my LEGO abacus:
- LEGO set No. 8032 Generic Construction Set (bricks)
- LEGO set No. 8412 Nighthawk Helicopter (axles and connectors)
If you are a LEGOmaniac, you can gather the parts from whatever kits you may have available.
Instructions & Complete Plans
Click on each image for the enlarged version.
![Build the top frame.](lego_files/2st.gif)
![Add the rods.](lego_files/3st.gif)
![Add the top beads & middle frame.](lego_files/4st.gif)
![Add bottom beads & connectors.](lego_files/5st.gif)
![Build the bottom frame.](lego_files/6st.gif)
![Add the bottom frame & finish.](lego_files/7st.gif)
![The completed abacus.](lego_files/abacus-tn.gif)
LDRAW File
The LDRAW file, Abacus.ldr, is available for download. I designed the model using Bricksmith, the Mac version of LDRAW.