I already printed a lot of this lamp for family and friends. You will need a IKEA HALVKLART, IKEA KAPPLAKE, IKEA LEDBERG with removed lens or any other small single LED.

Important: ensure good bed adhesion! the rest is easy, i took care of the special settings. 

Instructions

1 Print. Part1 and part2 should be printed solid and with 2 walls. More details on this below. If your first layer is good everything else will be smooth sailing, so you might want to print it at higher temperature and maybe a bit slower.
2 Glue up. Bend part1 and part2 and glue it all together. If some parts are hard to bend you can lightly score the bends with the back of a knife.

The design is from Hultis on thingiverse.