The HENG Balance lamp just successfully funded on Kickstarter, the design is pretty cool and unique so we decided to make a copy of it. At it's heart it's just an LED lamp with a simple micro switch to turn it on and off, we had all the parts to hand and a laser cutter to make the more complicated bits. The lower magnet is pulled towards the upper magnet and that turns on the micro switch.
The materials used:
6mm Poplar Plywood
and most importantly Flexible Maple Veneer Sheet
For the electronics we used:
12V LED strip
Finally some Lead Shot to weight the base of the lamp
All of the drawings for the laser cut parts are included in the svg file which was made with inkscape, if you're having trouble opening it in your CAD package why not try downloading inkscape and resaving it in a different format.
The official Heng design has wooden balls suspended in the middle of the frame, sadly they can't be laser cut so instead of waiting for balls to arrive in the post we compromised with wooden corks that could be produced immediately. While we were busy testing the feasibility of the design we forgot to take any photos on the internal construction. The 3D render shows the way the layers were stacked up to give us space for the magnets and a knot on the end of the string, all safely tucked away inside the cork.
Once the cork was glued together it was skinned with the flexible maple veneer to give it a clean finish and hide the laser cut layers. Two corks were made, one was suspended from the top of the oval, the other was attached to the micro switch in the base as described in the next step.