DIY PCB Fabrication (Dry Film Inkjet Method)

Update: To get the best results, spray water on the copper clad PCB before applying the dryfilm sticker. This eliminates the bubbles easily. Push the bubbles away as if you were installing a phone screen protector. You may proceed with the clothes iron or laminating machine afterwards. Thanks for your tips in the comments!

проще фотошаблон печатать на прозрачной пленке для струйной или лазерной печати, а фоторезист наклеивать под водой-никаких пузырьков.Каустическая сода не нужна-хватает обычной кальцинированной соды.

I see imperfections in your board. To make a near perfect PCB, with no breaks in the routing, plus all perfectly straight-width lines, I use Cricut Explorer 3. I have tried all the different methods of making PCB's throughout the years, and no end-result comes close to making a very detailed look as to using Cricut (it's just a more-advanced vinyl cutter). It only uses a sheet of black vinyl and ferric chloride. Your routing widths can be as narrow as 1mm.

Full support support

i tried this and my uv light doesnt seem to leave anything on the copper, the film has the pcb layout on it but it isnt going through onto the copper, what could cause this?

edit: for anyone else having that same issue, in the video (and description) he says NAOH/lye/caustic soda, you want to use sodium carbonate. he mustve gotten them mixed up or something. NAOH is way too powerful and is used for stripping a board so you can start over

Help please, I am running into an issue where sections on the board just refuse to etch, the etchant removes most of the parts but there are some areas that refuse to come off

which circuit design software you used for this ?

I love this stuff but a word on safety

Sodium hydroxide aka Lye will give yu a chemical burn the likes of which you cant imagine. It becomes caustic ie burns you when it encounters water and the small amout of water from your skin is enough. So when uskng lye keep a container of vinegar on hand as it neutralizes Lye / sodium hydroxide/ NAOH immediately.

In this method can I use hydrogen peroxide and h white vinegar as an etchant?

Nice foot. :D

Holy cow! How many toes do you have left? You were ripping away with that hacksaw an inch away from your toe on the barefoot that you were holding the board with?!?

Would you say this method is better than using a glass/clip sandwhich with the resist between the glass or does it get equal results? Curious if I need to adjust timing

Lol dry film is so easily available right

Too many steps it’s a waste of time and money.

like

To avoid bubbles, apply the film underwater and squeeze out the air bubbles with a plastic rule. Works for me.

Ah hombrew word I got happy hearing thath

Try spritzing it with water on the photo board..this way it is slick underneath, then use a credit card to squeegy the bubbles out (like on a cell phone protector or window tint) no need to iron

doesn't work with a laser printer?

About one million years ago when i was studiying electronis, we used pcb's with a photolayer on them. Just had to peel off the black sheet. Isnt that used anymore these days? Just asking.

hello what is the role of this circuit please

It will conduct electricity without etching or not?

what was that blue plastic name ? where i can get one

... I love you bro... God bless you... And grant you more knowledge.

Can i use LED light as a replacement for uv or cfl?

Why people insist on using sandpaper to get rid of copper oxidation is beyond me. I use a shellac polish renewer liquid. I have no clue what is in it but it removes copper oxidation in seconds. Wipe on with a paper towel, rub it in a bit, use clean paper towel to remove the remainder. A PCB that size you just use would require three drops of that product and shine like new.

My point being there are products out there that are not abrasive and clean copper far quicker and better and best of all without reducing the thickness of the copper any more than needed.

Não utilize soda caustica utilize pra revelar barrilha leve, mesmo produto pra decantar piscinas!!! soda é muito perigosa, a barrilha leve não tem perigo para a saúde e revela tão bem quanto!!!

É só passar vinagre de vinho tinto "Acido acético"

Use chemistry to initially clean your PC boards. White vinegar and salt will clean up the oxide without thinning your copper layer. Just don't overdo the vinegar or let the board soak overnight in it or anything... vinegar will very slowly etch copper, too. 8)

excessive waste of time, there are more practical and easy methods

Copper chloride is a supeior PCB etchant as it can easily be recycled so you don't end up with liters of that stuff.

Pang develop po ba talaga yung lye? O pantanggal nung dry film?

It's incomprehensible. When speaking, use commas and periods. Breathe... 🗑

Hello thanks for vedio.I want to use Fr4 back part cu as a ground how to protect it while etching.

Do you have a schematic for that inverter circuit? I'm trying to build one atm and would be very happy if you could provide it.

Nice

Something else that should help a LOT is not using sandpaper to clean up the copper before starting! That's just begging to create scuff marks and voids where bubbles can form. Try cleaning the copper in a mixture of white Vinegar and salt and let that soak for a couple hours before rinsing it with water. Another way would be to wipe the copper down with soldering flux/rosin paste and use a hair dryer on max heat or a heat gun at about 200°c to melt the flux/rosin. Rosin paste is acidic when it liquifies similar to the Vinegar/salt mix. A quick wipe with a rag or paper towel should finish the job.

so i used the caustic soda (sodium hydroxide) and it literally peels of the whole film.

Complex

100% Indian guy using his foot as a tool.

that was amazing.

I like how fast you talk. Too many "how tos" drag on and on and on and on...

Is it best to use acetone or 70% alcohol to clean the PCB before applying the film? Is Sodium Hydroxide better to use than Sodium Carbonate for the developer? I tried with NaCO3 for 2 mins and did not get great results. I need to rub the board gently with my finger afterwards.

With practice I have achieved far better results using dry film than seen in this video. It took a few months to perfect a technique. Now I can achieve perfect results using just a warm iron rather than a laminator.

7 minutes is a really long time. The issue is the paper you are using. most white paper contains a whitening agent that converts uv into a blueish light. If your paper turns cyan/light blue in uv light, then it also contains it. With tracing paper I'm getting only 40s exposure for a pcb, which is much, much faster.

Napakahusay talaga!