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This is a cordless 120 Volt lamp (60 watt equivalent, 940 lumens), powered by AA batteries through an inverter. It will run for three hours whe...
The concept is pretty straightforward. The smaller the inverter, the better. The more mAh the batteries can deliver, the better.
I started with a MakerBot filament spool and removed the label.
The CyperPower CP175 inverter works great (from Best Buy), but is a little large. I had to cut a hole in the spool to accomodate it.
Whatever inverter you choose, get one with a separate cord like this. It is easier to cut these wires and attach them to your AA batteries than to fo...
Print the "lamp bracket." This will fit in the upright tube, fit in the MakerBot spool, and hold the threaded brass piece from the GE bottle lamp kit...
Thread the insert in the large end of the bracket.
Add the adapter and ring.
Drill a 1/2 inch hole in the side of the spool. Cut the wires to the desired length and run them through the socket cap.
Attach the wires to the socket.
Add the socket shell (with the insulating cardboard) over the socket.
Snap the socket cap onto the socket and screw the lamp bracket to the socket.
With the lamp switched to the "on" position, slide the assembly through the spool (you may have to cut part of the switch off). In you are uncomfortab...
Print a lamp base.
Slide the clear acrylic tubing (1 3/4 inch OD, 1 3/8 inch ID, one foot long--Amazon.com) into the base piece.
Drill and countersink holes for 4-40 screws in a one foot square by 1/2 inch thick piece of acrylic (estreetplastics.com).
Add battery holders for 11 AA batteries (in series) to the spool.
Add a switch (this breaks the low voltage DC circuit).
Set the upper assembly into the tube.
Add the Philips lamp.
Take the two "shade" semicircles and fasten them together. If you use PLA plastic, here's how I do it. Run the "load filament" function and generat...
Now you have a shade.
Add a couple of small brackets (superglue) to the top of the spool. This will keep the shade from running around.
You now have a powerful, cordless, sort of retro, geeky cool lamp!
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