DIY GLOWING PENCIL LEAD

23,907

248

30

Introduction: DIY GLOWING PENCIL LEAD

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

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

Make it Glow!

Participated in the
Make it Glow!

MAKE ENERGY: A US-Mexico Innovation Challenge

Participated in the
MAKE ENERGY: A US-Mexico Innovation Challenge

Be the First to Share

    Recommendations

    • Make it Glow Contest

      Make it Glow Contest
    • First Time Author Contest

      First Time Author Contest
    • Anything Goes Contest

      Anything Goes Contest

    30 Discussions

    0
    spider_virus
    spider_virus

    5 years ago

    Awesome project buddy. loved it broda

    0
    me 1
    me 1

    6 years ago

    how long does the lead last?

    0
    hemaraj
    hemaraj

    Reply 6 years ago

    up to 20 - 25

    0
    me 1
    me 1

    Reply 6 years ago

    minutes or hours

    0
    hemaraj
    hemaraj

    Reply 6 years ago

    minutes

    0
    aylbegi
    aylbegi

    6 years ago on Introduction

    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?

    0
    hemaraj
    hemaraj

    Reply 6 years ago

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

    0
    ernestv
    ernestv

    6 years ago

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

    0
    steampunkpotato
    steampunkpotato

    Reply 6 years ago on Introduction

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

    0
    nqtronix
    nqtronix

    Reply 6 years ago on Introduction

    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. :)

    0
    hemaraj
    hemaraj

    Reply 6 years ago

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

    0
    settingsdestroyer
    settingsdestroyer

    6 years ago

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

    0
    hemaraj
    hemaraj

    Reply 6 years ago

    no the gas does't make any harm

    0
    hemaraj
    hemaraj

    6 years ago

    You can also use this in igination system

    0
    hemaraj
    hemaraj

    Reply 6 years ago

    :) thank you

    0
    fred3655
    fred3655

    6 years ago

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