Build Your Own Lava Lamp
Manip writes "My new project: 'The difficult part about making your own liquid motion lamp is, of course, the motion. We won't go into the lamp base too much. The store-bought ones use a 40w appliance bulb in a metal housing which directs the heat to the underside of the glass container. If you're making your own base, we recommend installing a dimmer switch so that you can control your heat output.'"
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A good thing to do even with the store bought ones. I use an X10 lamp dimmer on mine, but have also used a wall mount lamp dimmer to replace a wall switch for a friend. After these things get hot they generally get very active and it results in too many too small blobs of lava to be enjoyable. With a dimmer you can adjust the flow to suit your preferences even when the lamp warns up.
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