Etch your own PCB using Pre-sensintized pcb (dami pics)

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Etch your own PCB using Pre-sensintized pcb (dami pics)

Postby ferds » Mon Jun 04, 2007 8:07 am

hi guys,

share ko lang kung papaano ako gingawa mga pcb ko.. :D :D :D

materials needed:
1. Pre-sensintized pcb w/ developer (from alexan)
2. Tracing Paper
3. Masking Tape
4. Bond papers
5. Clothes pins
6. Ferric Chloride (fecl)
7. Lacquer thinner
8. clear glass

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sensya na po kung di masyado malinaw pagkaka-explain.. hehehe

step 1: Design your pcb layout using Protel, eagle or any other software you prepare.. (i used Altium Designer 6 also know as Protel)

heto po ung HEPA Headamp na ginagawa ko.. hehe
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step 2: Print your layout in a piece of bond paper..
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step 3: Cut a piece of tracing paper enough to cover the layout and secure it with masking tape..

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step 4: Print your layout.. make sure you set your printer to maximum detail/quality

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step 5: Prepare 2pcs of clear glass..
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step 6: secure the pcb to the glass using masking tape..

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step 7: Remove the protective film of the pcb and place the tracing paper over it..

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step 8: Placed the second glass over the pcb and secure with clothes pins.
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step 9: Exposed the pcb under a florescence bulb or UV exposure box for 12mins.
:shock: :shock: :shock: :shock: :shock: :D :D
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step 10: Prepare the developer solution. 1000cc 0f water per 50g of developer powder..
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step 11: Place the pre-sensitized pcb into the solution.. Slightly shake the solution until the tracks area, clear and there is no more blue, smoke like resist coming off the exposed area on the board..
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step 12: Rinse the board under running water to remove developer and to stop the developing process

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step 13: etch the PCB using ferric choloride..
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step 14: remove the photoresist coating with lacquer thinner.
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sensya na po kung mali-mli grammer ko..hehehehe
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Postby arnoldc » Mon Jun 04, 2007 8:11 am

Thank you for sharing Ferds. I know I bugged you about this during the headphone meet because I still use the old-fashioned "laser printer/photo paper/steam iron" way.

I use Express PCB for designing the PCB layout. It's a lot more user-friendly than Eagle and it's FREE.

Ferds, yung nasa Step 10 eh sinisinghot ba yan? :twisted:
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Postby ferds » Mon Jun 04, 2007 8:28 am

hehehe.. pwede din..

ur welcome prof!!
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Postby arnoldc » Mon Jun 04, 2007 8:38 am

Hey Ferds, I made this post "sticky"

(malakas ba tama nyan? he he he)
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Postby BenC » Mon Jun 04, 2007 9:29 am

Nice one Ferds! :D :D :D

ArnC,
Sana marami pang ganito ang lumabas dito sa WS!

Cheers,
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Postby alexg » Mon Jun 04, 2007 9:33 am

Ferds,

Where do you get the developer and the FeCl?

This will be handy for circuits like CCS board for tube projects.

Thanks,

Alex
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Postby Jon Agner » Mon Jun 04, 2007 9:56 am

ganito na pala ka-sisiw ang pag-etch sa PCB :shock: :D :D :D Gone are my days of "manually" tracing the circuit onto the PCB :)

Thanks for the post :D
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Postby ferds » Mon Jun 04, 2007 2:56 pm

alexg wrote:Ferds,

Where do you get the developer and the FeCl?


The Developer is included with the pcb..

sa Alexan sa pwedeng bilhin pati ung fecl..
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Postby ferds » Mon Jun 04, 2007 4:01 pm

arnoldc wrote:Hey Ferds, I made this post "sticky"

(malakas ba tama nyan? he he he)


wow prof, thanks alot..
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Postby s2kov » Mon Jun 04, 2007 4:06 pm

lufet! :shock: :D
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Postby Alcohol Jan » Mon Jun 04, 2007 9:27 pm

nice job, ferds

something to add:

please note that the ferric chloride is considered a pollutant as well as corrosive and needs to be disposed properly.

and that the ferric chloride needs to remain sealed and placed in a cool place until it is needed for use.
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Postby tony » Tue Jun 26, 2007 3:36 pm

good on you ferds.... :D

fecl or ferric chloride is a salt, so it absorbs moisture quite fast, so seal the container when not using..

etching takes shorter time when the solution is is hot, and the solution agitated as you etch your boards.... :D
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Postby arnoldc » Sun Jul 01, 2007 7:13 am

:( :( :( :(

I just wasted two sheets of 6 x 4 pre-sensitized PCB

:( :( :( :(

It contained 16 pcs of the VSPS circuit and I screwed up the use of the developing pellets :evil: I was excited and prepared the entire 50g and my two board's trace disappeard in smoke before I can completely say "O h S h i t ! !"

:evil:

What I discovered was a solution the size of a big Star Margarine plastic container is all it needs to proper developing.

Hay, expensive (P90 x 2) lesson learned

When I got the solution right, it was damn good! Far far far better than the laser printer method (or even the pentel pen version of the past) and takes less than 25 minutes for the complete process!

Image
By arnoldc, shot with K750i at 2007-06-30
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Postby ferds » Mon Jul 02, 2007 7:51 pm

looking good sir arnold...

mahirap talaga pag first time.. :D :D
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Postby arnoldc » Tue Jul 03, 2007 7:55 am

Yung first time ko sa ibang bagay, di naman :lol:

Seriously, may alam ka ba na photosensitive na paint, or what ever na pwede ko gamitin dun sa dalawang 6 x 9 na nahubaran?

I followed your steps-

1. Used tracing paper to print the circuit layout, I did it direct printing to the tracing paper. I got the "canson" brand tracing paper from National Bookstore, it has high transparency and very smooth.

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By arnoldc, shot with K750i at 2007-07-02

Not in the picture is when I sandwiched the tracing paper (toner side down) on the PCB with two glass I stole from the office certificate frames :lol: :lol:

2. Expose to light

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By arnoldc, shot with K750i at 2007-07-02

3. Developing

This is tough one. As I mentioned I screwed up two 6" x 4" pre-sensitized board. Finally, I got a ratio that works.

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By arnoldc, shot with K750i at 2007-07-02

4. Etching

Using Ferric Chloride, the etching process is done in about 5 minutes.

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By arnoldc, shot with K750i at 2007-07-02

5. Cleaning up

Using the suggested Lacquer Thinner, I cleaned up the PCB. Actually, I can dip this again in the super strong developing solution instead of the lacquer thinner.

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By arnoldc, shot with K750i at 2007-07-02

6. Cutting down to pieces

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By arnoldc, shot with K750i at 2007-07-02

7. Assembly

(as pictured above)
Last edited by arnoldc on Tue Jul 03, 2007 8:20 am, edited 2 times in total.
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Postby ferds » Tue Jul 03, 2007 8:02 am

haha..

alam ko sa RS meron kaso 1gallon lang yata available.. :shock: :shock:
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Postby tony » Tue Jul 10, 2007 3:25 am

after a dip with lacquer thinnner, mild solution of muriatic acid(the one we used to clean toilet bowls) can be used to clean the board) toroughly rinse and dry the board.

or you can use "ajax" powder cleaners with scothbrite pads to restore the luster of copper.....after a torough washing and drying....

clear plastic varnish can then be applied to avoid the copper traces from being tarnished with handling. :D
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Postby nicole » Mon Oct 29, 2007 11:15 am

Thank you sir for sharing :lol:
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Re: Etch your own PCB using Pre-sensintized pcb (dami pics)

Postby pie-key » Mon Sep 13, 2010 4:03 pm

just like to share mine.... my small DIY hobby for electric guitar pedals.... and stuffs

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DRAFTS:
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ending up like this
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share lang po.... if you put effort on your designs.... it will serve you well...
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