Book Light Reading Light

 by Grathio
Contest WinnerFeatured
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book_light_side.jpg
book_light_side.jpg
Friends have regularly recommended books as being particularly illuminating, but I admit that after opening them I was as in the dark as ever. Since I’m not one to let a good metaphor go unmolested (and because design schools seem to constantly create designers who’s job it is to make ugly lamps) I made this.

*Thanks to Boing Boing, Make, Craft and all the other sites for featuring this project, and to the Instructables community for voting it as a finalist in the LED contest!



It turns off when its closed and gives off a variable amount of light depending on how far you open it, up to about a 40W light equivalent. It gives a nice warm, soft light and it looks right at home on my bedside table.
 
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Step 1: What You Need

book_light_side.jpg
Skills:
  • Basic soldering. 
  • Basic wood cutting.
  • Measure stuff reliably.
  • You have to be wiling to scalp a book.

Time:
A couple of afternoons, though a lot of that time is waiting for glue and paint to dry.

Materials:
  • Hardback book. At least 1″ thick. (I got mine from the local thrift store.)
  • 1/4″ plywood or MDF (About a square foot or so should do it.)
  • Wood glue.
  • White or clear 2-part epoxy.
  • Smoked or sign white acrylic, 1/8″ thick and as big as your book. (I got mine from Tap Plastics.)
  • http://www.diodeled.com/products-view.php?id=16(I used this one from SparkFun because its small and sensitive.)
  • 2.1mm female panel mount plug. Like this one from Mouser or this one from Jameco.
  • 12v 600mA power adapter with a 2.1mm make plug. (Like this one from SparkFun)
  • 22 gauge (or so) insulated wire. Stranded or solid core.
  • Flexible warm white LED strip. You’ll need enough to be double the width and height of your book. I bought mine by the inch at the local hardware store, (this is what it is,  but they only sell wholesale.) If you can’t find it there, these from Phenopix are similar. You can also find other suppliers at this search. You don’t need waterproof, regular watervulnerable is fine.
  • White acrylic paint.
  • Electrical tape (ideally white)
  • Either a) Off-white linen & white glue or b) Ivory or white acrylic paint. Thick, from a tube, not a bottle. This is for simulating the outside pages. Paint is easier to do but it doesn’t feel as nice.

Tools:
  • Craft knife
  • Soldering iron and solder.
  • Pliers.
  • Clamps.
  • Square.
  • Drill.
  • Fine grain sand paper (220 or so.)
  • Wire cutters.
  • Wire strippers.
  • 1″ paintbrush.
  • Saw.
  • Pencil.
  • Ruler.
  • Tape.
yauzi says: Nov 16, 2011. 10:33 AM
Thanks for this awesome Instructable!
Was great fun making it, thinking of building another one :)
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Grathio (author) in reply to yauziNov 17, 2011. 9:34 AM
That's fantastic! Thanks for sharing it.
(And a great book title!)
BenistheMenace says: May 21, 2012. 12:16 PM
What level of transparency do you recommend ? TAP offers 20% , 30% etc.
Grathio (author) in reply to BenistheMenaceMay 22, 2012. 10:27 AM
I used 40%, though it's still kind of milky and translucent. I like that when it's off you can sort of see what's behind it. If you want to get rid of the milkiness go for "sign white" or 20%, though it will absorb a bit more light than the more transparent materials.
Jayefuu says: Jun 19, 2011. 4:12 PM
Nice.

I think your Vimeo video needs resizing though, it obscures your author profile.
Grathio (author) in reply to JayefuuJun 20, 2011. 8:31 AM
Got it, thanks!
TheBestJohn says: Jun 20, 2011. 4:41 PM
Great instructable as always Grathio... as far as the switch goes you could have used a magnetic reed switch and a magnet embedded into the cover for more of a clean design. I love it!
Grathio (author) in reply to TheBestJohnJun 21, 2011. 9:06 AM
Thanks John!

A reed switch is a great idea, would clean up the lines, and would help hod it closed when off. (Which wasn't a problem with this book, but could be a problem with some bindings.)

Be sure to get a "NC" (normally closed) type reed switch which is a little harder to find than the common "NO" (Normally open) switch. That will make sure it turns on when you open the book rather than off.
snotty in reply to GrathioJul 20, 2011. 11:24 PM
Yes!

I've been thinking of something similar since I made a book speaker. It would be awesome to use a flex sensor or a linear potentiometer that would control the light level depending on how far the book opens.
slu6alka says: Jun 20, 2011. 1:20 PM
Awesome project...I think I'm gonna try it :)) Thanks for sharing :))
jamiec53 says: Jun 20, 2011. 12:22 PM
Now that, is cool!
droid1936 says: Jun 20, 2011. 2:47 AM
wat een fantastisch idee, cone make one
Kaptain Kool says: Jun 19, 2011. 7:44 PM
I just realized the title of the book. Very clever!
Kaptain Kool says: Jun 19, 2011. 7:43 PM
This is sooooooooo cool! I've always wondered if you could use an old book for something other than a safe...
Great job!
ChrysN says: Jun 19, 2011. 5:18 PM
Awesome, great idea!
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