I have absolutely no idea what process engineering is. But from now on whenever hear that word I'm going to think of this. And so should you.
I was able to build this lamp for under $20 (US) The books cost $6, The Switch and fixture cost $7.50, and a few misc. items that was another $4.
Another successful book lamp from a dedicated user! That particular light bulb looks brilliant, a great addition to the build. If you missed the first one, here's what user Richard C made last week. Well done guys, let's keep them coming!
From the submitter:
So you have a ceiling fan in a room with a cathedral ceiling that needs a light bulb and no ladder available. Using a broom stick, an empty pill bottle, a hair scrunchy, a large chef's knife, and some duct tape you can build Bulb Changing Tool 5000. Simply cut a series 1-1/2" long slits lengthwise starting at the open end of the pill bottle to make a collapseable bulb holder. Wrap the hair scrunchy around the pill bottle to enable a nice grippy action. Punch a hole in the bottom of the pill bottle.