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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

3mm Poplar Plywood

0.73mm Frosted Polypropylene

and most importantly Flexible Maple Veneer Sheet

For the electronics we used:
12V LED strip

12V Wall Block Power Supply

5A Microswitch

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.

Step 1: Floating Corks

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.

<p>love it</p>
<p>Oh now that's cool! Initially I thought the magnets were completing the circuit with some HAL detector, but a mechanical switch being pulled, very clever! Maybe to make a silent switch you could &quot;wire up&quot; the upper cork with a HAL detector switch that would activate a relay/circuit when the lower is detected?</p><p>Steve</p>
<p>I think I prefer it with the cylinders. Nice job.</p>
<p>Great lamp, I'll build one. Thanks a lot for the instructable!</p><p>Only &quot;complaint&quot; though: the svg file doesn't work correctly in Estlcam. I think it would be better if you could provide separate SVG files for each part :)</p>
Ah, I keep forgetting to save it as a generic svg file instead of an inkscape svg file. On the plus side you can easily download inkscape and resave it as a Esticam compatible version. It's the great thing about inkscape being cross platform and free.
<p>Well, I ended up redisigning everything, since I use a CNC instead of a laser cutting machine (This way I can use much thicker material).</p><p>So far, here is the result, I hope to finish it this week. Thanks for the inspirations!</p>
<p>I'm curious about what magnets you used.</p><p>Great instructable.</p>
<p>I cannot believe but i do this same desing 5 years ago!!! i think the same lamp, i draw the lamp that you show!! i do not know that someone invented too! its amazing! really i draw, and think the mechanism of the magnets.... i do not speak english, hope this understood... anyway, its incredible!</p>
<p> maybe you showed it to one of your friends or someone saw your drawing. they stole your design. too bad. some of my own designs were stolen and patented by co-workers of mine. but that's life. </p>
<p>oh, sorry for what happend to you! But, in this case is just coincidence (i live probably in the other part of the world).</p>
<p>Amazing work</p>
<p>very cool design. elegant and pretty.</p>
<p>Nice job. One thought on what could make the finished lamp seem a tiny bit more professional would be a retract mechanism so the lower cord disappears into the base and the cork sits flush at the bottom with no cord visible.</p>
<p>Great guide Martin! Think I'll be having a go at making this one day!</p>
<p>One way to make a wooden ball - </p><p>Use wooden dowel of the wood you prefer, then cut about 2 to 3(or more, it depends on the size of the ball) inches off. This will become your ball, eventually. </p><p>Then angle-cut each end so that you have a start at rounding each end off to form a perfect 'dome'. Then - using any drill, drill press, or basically anything that can hold the dowel and turn it at a high rpm, carefully use rasps, files, and sandpaper/emery cloth to round the 'dome' at each end. Once the dome is finished, cut each off leaving at least 1/4 inch of the straight sides. Using a Forstner bit, core each dome WITHOUT cutting through. </p><p>Carefully sand the 'extra' sides(used to hold the piece in a vise for drilling) down to the point where the curvature is just beginning to start. </p><p>Glue the halves together to create a ball, making certain to keep the wood grain of both halves going the same way - you may need to do some finish sanding to make it look or feel better once the glue has set.</p>
What an amazing lamp!! I've always liked making my own version of other people's designs, and this is a great one
<p>haha good one,</p><p>WannaDuino!!</p>
<p>Very neat project, thanks for sharing! I will try to make something similar soon!</p>
I saw the original one on instagaram and thought it was pretty cool. This is a great imitation! Nice job, voted!
<p>Imitation is the sincerest form of flattery. Nice job, what an elegant lamp!</p>

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Bio: At Just Add Sharks we don't only sell laser cutters, we love to make things on them too. Born out of a love of ... More »
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