Instructables
Picture of Night Pen
IMG_3592.JPG
night pen.jpg
IMG_3609.JPG
IMG_3550.JPG
When I was a soldier I would write letters after the sun went down. The problem with that was other soldiers would be bothered by the light pollution from my flashlight. This pen focuses light right onto your page. No more angry soldiers. I left the cap clear for use as a safety light. It also works much better then holding a flashlight under your chin. The idea is that the pen body works like a fiber optic. The top is illuminated and transmits the light down to the writing tip.  
 
Remove these adsRemove these ads by Signing Up

Step 1: Trim the pen down

Picture of Trim the pen down
IMG_3553.JPG
IMG_3555.JPG
IMG_3556.JPG
IMG_3557.JPG
IMG_3558.JPG
IMG_3560.JPG
To keep the pen the same length I cut it down to accommodate the mini flashlight. I used a razor blade to clean up the cut.    

Step 2: Round over the writing tip and drill

Picture of Round over the writing tip and drill
IMG_3561.JPG
IMG_3562.JPG
Rounding over the edge of the writing tip helps diffuse the light. I used a razor blade to cleanly trim it down. Once that was done I drilled out the other end to fit the mini flashlight. The inside of the pen was a hexagon shape and I needed it round.

Step 3: Cut down the LED housing

Picture of Cut down the LED housing
IMG_3567.JPG
IMG_3568.JPG
IMG_3563.JPG
IMG_3564.JPG
IMG_3565.JPG
IMG_3566.JPG
I kept my fingers crossed during this step. I wasn't sure there would be enough material to remove. It worked out and my little lathe made short work of it. I cut it down until it was a press fit into the pen body.  

Step 4: Plasti Dip

This is the kind of plastic that doesn't take well to plastic-dip. To remedy that I scuffed up the pen body with sand paper and spray painted it. Make sure to plug both ends. You don't want to coat the inside of the pen. Once the pen dried I dipped it and hung it to dry. I had to do this a few times to completely black out the pen.

Step 5: Clean up

Picture of Clean up
IMG_3582.JPG
After the plasti dip dried I cut all the joints with a razor blade. I then removed the drill bit I used as a holder and the electrical tape.
pwnag31 year ago
I'd like to hear the barfight story :D
Advar pwnag39 months ago
Me too.
◇◆
Advar9 months ago
Really good idea, very bright ;) But don't you need to cut the refills too?
cflores2411 months ago
does it work with any other pen?
Mrballeng (author)  cflores2411 months ago
No, it's machined specifically for this this one.
Cool
sport8881 year ago
I like dis I idea it is very inventive LOLOLOLOLOLOLOLOL
shazni1 year ago
Thanks for the idea...i like it :-)
kidharris1 year ago
Nice solution.

It reminds me of an old news story long ago when the US and Soviet Union, now called Russia, were putting people into earth orbit. They needed some way for the astronauts to be able to write their reports (this was before the PC and laptops). The US spent $250,000 (that was a lot of money back then) developing a fountain pen that would write in zero gravity. The Soviets just used a mechanical pencil.

I would have just used a $1 led head lamp (miners light), and would be able to use it for a lot more than writing. This idea would probably sell though if it was cheap enough.
and when the graphite bit broke it got into one cosmonaut's eye...it was not so cheap restoring his vision..
ArticAkita1 year ago
I usually had bad experiences with cutting the inktube and huge mess to clean up afterwards! its a very clever idea though! might have to try it someday :P you did a very good job & very clear on the instructions you used
This I like. Lots. Thanks for sharing it, I'm off to make about 10 of these.
Baldilocks1 year ago
As 'Kidharris' says, there are simple ways to do the same thing. Simple and easy is also boring. Nothing will beat the fun of making and using something unique and individual. That's why 'Istructibles' is so good.
neonix1 year ago
Love this. Awesome job!
IamWe1 year ago
Mrballeng, you are a endless source of creativity. Great idea, well done.
Mrballeng (author)  IamWe1 year ago
Thank you.
jubal191 year ago
Great instructable, as always.
Your 'ibles always make me want to go buy a metal lathe. You do excellent work.
Do you (or anyone) have any tips on how to keep Plasti-Dip usable longer once you open it. I never have enough jobs for it when I open it and a month later, it is too thick to use.
Mrballeng (author)  jubal191 year ago
Tupperware maybe?
Looks like a really nicely finished project, and I'm sure your comrades appreciate your efforts.

Do you not find that plugging the nib into the ink tube causes air bubbles?
Mrballeng (author)  Dream Dragon1 year ago
No, it seems to work like normal.
Amazingly awesome
PlastiDip is great stuff. I like this project.
Erfunden1 year ago
That was beautifully done! Very cleanly made.
I love this! I am now inspired to make something as cool as this (which might be impossible considering how awesome this is). Thank you!
ladybgood1 year ago
I got a pen like this about 10 years ago. They're fun! well done 'bile on how to make your own.
PitStoP1 year ago
Nice pen...
<3 Plastidip, its the best. Great work, and thanks for the share.