This easy sliding lamp uses tension to be easily repositioned vertically along a steel cable. The design was inspired by the Parentesi Lamp which I saw in the book Nomadic Furniture 2. While the design is very similar, my version uses easy-to-find parts such as a bike handlebar, exercise weights, and a bolt-on adjustable work light. As such, this take on the lamp can be made for significantly cheaper than the $550 list price of the Parentesi Lamp.
The nice thing about this lamp is how customizeable it is. Aside from being easily positioned, it can also be expanded to include multiple lamps on the same steel cable. With a bit of redesign, it could potentially be mounted horizontally or - really - so long as the cable is kept tensioned, at any angle you would like. Any which way you decide to go, this is a cheap, easy, and stylish weekend project.
You will need:
(x1) Adjustable Mini Arm Light
(x1) Bike handlebar
(x3) 5 pound round weights
(x1) 3D Printed Lamp Bracket***
(x1) 4" steel cover plate
(x1) 1/4-20 turnbuckle
(x1) 10' x 3/16" plastic coated steel cable
(x2) 3/16 compression sleeves
(x2) 3/16 wire rope thimble
(x1) 6" x 3/4" spring (or similar)
(x1) 1/4-20 x 1" bolt
(x4) 1/4-20 x 3/4 hex head bolt
(x4) 1/4-20 nut
(x1) Threaded bolt hook
(x1) Light bulb
(x1) 15' 2-wire black fabric cord (optional)
(x1) 2-prong power plug (optional)
(x2) 1" sections of heat shrink tubing (optional)
***See the next step for more information and alternate solutions.