Instructables

Giant ceiling light with multiple functionality a.k.a. the UFO

Picture of Giant ceiling light with multiple functionality a.k.a. the UFO
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This giant suspended light (outer diameter 3.6 m or 142 in) has three functions:

1. Provide direct lighting for illuminating the room: the 'regular' light;
2. Provide indirect lighting illuminating the ceiling in two circular bands: atmospheric lighting;
3. Add an outlet, centrally accessible at the ceiling: practical for plugging in a beamer or other electric equipment without having cables lying around on the floor.

The lamp is shaped as a ring, stretching from wall to wall. In this specific case, the lamp encircles  a skylight. The ring itself adds design properties to the construction:

1. Instead of having multiple ceiling lights, optically the construction feels like a single lamp, which adds a quiet element to the room. This aspect is intensified by choosing a same color for the lamp as the ceiling has (white in this case);
2. All cabling is hidden above the construction. This eases the construction but also adds to a well finished look of the lamp;
3. The ring gives room for integrating switches by which the lights and the integrated outlet can be controlled independently, as well as a dimmer-switch for reducing the light intensity. A main wall switch is still present for switching the lamp on an off. 

The design, the making, the finishing and the installation of this ceiling light has taken a few days in total. The final result was to everyone’s satisfaction. A lot of work, but worth the effort. 

The next steps discuss safety issues (Step 1), detailed design features and installing (Step 2) and licensing (Step 3).
 
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oldmicah1 year ago
Looks great. Question though. Why MDF rather than 1/4" plywood with a built up edge? I.e. is there a specific design reason or is that what you had on hand?

I use MDF for the top of my workbench. Fantastic stuff, but gads is it heavy.
openproducts (author)  oldmicah1 year ago
I opted for MDF because I wanted the edges to be rounded off using a milling cutter and expected the result with MFD to look better than with plywood. Moreover, I feared that thin plywood might sag in the course of time, as the plates are only suspended on a number of spots and there is quite some free overhang. Now, after a few years on the ceiling the lamp is still as flat as it was on the first day. But I cannot judge whether that would have been the case with 1/4" plywood as well...