Introduction: DIY GLOWING PENCIL LEAD

Hai readers iam going to show how to make the pencil lead to glow like a light. During the process the lead can reach upto 300°¢ so be carefull while doing this.


Step 1: •°Components Required•°

* Pencil Lead
* Testube
* Meatel cap X 2
* Big Needle X 2
* ball point pen nib to hold lead at the edges
* 15 V DC supply

Step 2: °•Use 0.7 Lead•°

I used 0.7 pencli lead and 15V Dc power supply from li-ion battery

Step 3: °•Setting Up the Lead Inside the Tube°•

First take the Testube and break the bottom of the test tube. Now take metal cap and make hole in the centre of the cap. Now take the cloth stretching needle to make holder. To hold pencil lead you need to make holder. I used the ball point pen nib to hold the lead. Solder the ball point pen nib at the end of the needle by tieing it with thin copper wire. Now you can easily fix the lead inside the test tube

Step 4: •°POWERING UP°•

I powered this lead by using the 12v 7A li-ion battery the lead started glow by emiting the white coloured gas

Step 5: VIDEO

Comments

author
spider_virus made it!(author)2015-09-16

Awesome project buddy. loved it broda

author
hrishi4040 made it!(author)2015-05-04

hey what do u meant from car battery ?

author
deba168 made it!(author)2015-01-16

Really Genius :)

author
me+1 made it!(author)2014-12-31

how long does the lead last?

author
hemaraj made it!(author)2014-12-31

up to 20 - 25

author
me+1 made it!(author)2014-12-31

minutes or hours

author
hemaraj made it!(author)2015-01-02

minutes

author
aylbegi made it!(author)2014-12-22

Why would'n I just use a bulb?

What is the advantage of using a pencil instead of bulb?

Is it juist the AC problem?

author
hemaraj made it!(author)2014-12-25

i wanna 2 do something new...soo i choosed pencil lead...ya

author
ernestv made it!(author)2014-11-28

Won't this short circuit the battery and consequently cause it to over heat?

author
steampunkpotato made it!(author)2014-12-06

Naw, if that were the case i think he would be nursing some severe acid burns.

author
steampunkpotato made it!(author)2014-12-06

acid burns. at least i think that would be the case

author
nqtronix made it!(author)2014-11-29

Well, just because there is something condictive between both terminals of the battery it doesn't mean it's a short circuit. In this case the "short" is actually the load: compared to the resistance of the wires and the internal resistance the resistance of the pencil lead is much higher (at least 10 times).

Nice instructable btw. :)

author
hemaraj made it!(author)2014-11-28

No short circuit the electric bulb is also using the same princple

author
settingsdestroyer made it!(author)2014-12-02

is there a chance the gas could be harmful or fairly to highly flammable? btw amazing project either way

author
hemaraj made it!(author)2014-12-03

no the gas does't make any harm

author
hemaraj made it!(author)2014-11-29

You can also use this in igination system

author
nodcah made it!(author)2014-11-29

Nice project! =)

author
hemaraj made it!(author)2014-11-29

:) thank you

author
fred3655 made it!(author)2014-11-29

have you measured the current? how long before it burns out?

author
hemaraj made it!(author)2014-11-29

sorry forgot to measure
but when i give 15 voltage dc it starts glow

author
Electrospark made it!(author)2014-11-28

Looks awesome!

you use graphite stick from a pencil, right?

Keep up the good work! :)

author
hemaraj made it!(author)2014-11-28

yes i used 0.7 lead from pencip

author
Electrospark made it!(author)2014-11-29

O.k, Thanks again! :)

author
deba168 made it!(author)2014-11-28

Nice idea :)

author
hemaraj made it!(author)2014-11-29

yes u r right

author
The+Ngineer made it!(author)2014-11-27

That's awesome

author
hemaraj made it!(author)2014-11-27

Thank You

author
The+Ngineer made it!(author)2014-11-27

How did you even think of this?!

author
hemaraj made it!(author)2014-11-27

My chemistry proffessor told about this

About This Instructable

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Bio: I am an electrical student living at chennai i love electronics very much.
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