Ceiling Lamp Extender

thingiverse

Here are the files for my lamp extender project. I designed some parts that would make the cable exit look nicer and keep it away from sharp edges while holding the lamp socket cover in place. The design was made to fit the cover for the IKEA Melodi (38cm) lamp, so only the "Melodi" model files will work with that lamp. The entire arm is composed of: - Two pieces (900mm and 100mm) of 4040 T1 T-slot aluminium extrusions. - One angle bracket with matching M8 T-slot fittings. - One M8 T-slot fitting and a M8 screw eye. - Two plastic endcaps for the exposed sides, which I purchased at a store. The printed parts include: - The "cable exit" is a two-part design that protects the cable from the extrusion edges and guides it straight down. The "backing" part has a lip that rests inside the T-slot channel. Together they sandwich the cable, then you push the whole assembly into the extrusion end. Note that the pegs fitting inside the extrusions corners may need to be filed slightly for a nice fit. It depends on how hard the printed plastic is. In my case I filed a tiny bit of the stud-wedges since I printed it out of PLA, which is pretty hard. Other plastics might work without filing. - Slot covers. I made a 60mm long T-slot channel cover that fills the gap in the vertical piece of the extrusion. I also printed two more of those covers, but 30mm long (just scaled in the slicer). Those I snapped into the channel on top to keep the cable in check. - Melodi socket cover plug and nut. In order to get the socket cover snug against the ceiling, I made a plug that fits in the bottom hole, followed by a thin plastic M8 "nut".