PCB MAKING-COLD TRANSFER METHOD

Introduction: PCB MAKING-COLD TRANSFER METHOD

About: Hi, I am bharat .

hi in this instructables i am going to show you how i made my printed circuit boards at home.i dont like hot iron press method thats why i am using cold transfer method with little bit twist.

apart from that i am also going to show you how you can use needle as a drill bit and pcb etching using muriatic acid.

for more videos and projects subscribe my YouTube channel click here- BHARAT MOHANTY

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1:

you need:-

{1} copper clad

{2} pain relief spray

{3} laser printer

{4} needle

{5} drill/pcb hand drill

{6} muriatic acid

{7} hydrogen peroxide

circuit parts:-

{1} transistor (bc547) 4

{2} relay (6 volt) 4

{3} resistor (1k) 4

{4} diode (in4007) 4

{5} led (optional) 4

{6} female and male header

Step 2:

first of all we need to design the pcb, for that you can use any pcb cad software.there are some online pcb design ide are available like eagle,easy eda but if you want a dedicated pcb cad

software like i do you can use kicad,librepcb or fritzing.all these three software are free and open-source and available for windows,mac and linux.i like fritzing because it is easy to understand even a beginner can work with it.here i am designing a relay based motor driver on a single layer board.

Step 3:

after designing board on a pcb cad i print it out (mirror image) on a paper using a laser printer.here i am using regular a4 size paper but glossy old magazine paper is best.after that i measured and cut a copper clad according to the size of circuit template.

Step 4:

before toner transfer we need to clean the surface of copper clad.now take the printed paper and spray some pain relief spray. it contains alcohol and some natural oil (i cant tell you the composition because of the proprietorship issue but you can always check it on the spray can ) this spray reacts with the toner and makes it sticky for a short amount of the time.jut put it on copper clad immediately after spray.let it dry for at least 5 minutes.then remove the paper.and you will get a nicely printed board if it is bit wet then let it dry for another 5 minutes or if you feel that some parts are not printed then draw it with permanent marker.

UPDATE:-

compositions are

diclofenac diethylamine, linseed oil, methylsalicylate, menthol

Step 5:

for pcb etching i am using one part muriatic acid two and half part of hydrogen paraoxide.muriatic acid is nothing but the diluted hcl with lots of impurities.here hydrogen peroxide is acting as a oxidiser.now i will put the clad on this solution,i am stirring the solution to make etching process faster.after etching put the pcb in water and wash it.

Step 6:

now its time to remove all toner from the pcb for that you can use thinner,acetone,nail polish remover or simply scrub it out.now its time to drill the holes.it is quite possible that you wont get the right size drill bit, so i am using a needle to make holes.

Step 7:

after drilling holes assemble all parts and solder it....and your printed circuit board is ready to use.....

Be the First to Share

    Recommendations

    • Trash to Treasure Contest

      Trash to Treasure Contest
    • Raspberry Pi Contest 2020

      Raspberry Pi Contest 2020
    • Wearables Contest

      Wearables Contest

    8 Discussions

    0
    kymyst
    kymyst

    25 days ago

    Your instructable is very interesting, but the pain relief spray isn't described very clearly. There are many different brands of these products which all have different ingredients. Some of them seem to be solutions of menthol in alcohol, is that what you used ? I don't understand why you haven't disclosed the ingredients, if it is shown on the label then it is not a proprietary secret.

    0
    BHARATMOHANTY
    BHARATMOHANTY

    Reply 23 days ago

    Ok i will update this instructable with ingredients mentioned on the spray.i don't know why your comment appear today but it shows two days ago...btw please visit my YouTube channel and if you like it then subscribe 👍

    0
    kymyst
    kymyst

    Reply 16 days ago

    We are still waiting to see the ingredients !

    0
    BHARATMOHANTY
    BHARATMOHANTY

    Reply 15 days ago

    Sorry for late reply I've been busy...will update this article this Thursday....

    0
    tytower
    tytower

    Reply 20 days ago

    Yes I agree too. This is a new method you have come across and I'd like to try it too but the spray could be anything. The name and ingredients are important . They won't mind you publicising it , they want to sell as much as possible.

    0
    tytower
    tytower

    25 days ago

    There is nothing to stop you naming the product you used . It could be anything and obviously people need to be able to get the right one if they are going to use your method ,so name away?

    Its hydrogen peroxide by the way.

    0
    BHARATMOHANTY
    BHARATMOHANTY

    Reply 23 days ago

    I will update this one.thanks for correction....i am dumb i did this mistake every where...

    0
    tytower
    tytower

    Reply 20 days ago

    Nah not dumb . Good method, but I want to try it so I've gotta get the items right!