Boards
Hi ifrythings
First I make PCB
Then I do everything from here
Only the etching is diffrent then my. I use Hydrochloric acid and Hydrogen peroxide with a lot of water. Ratio is let say 1:1:20, don't really know because I do it by the eye
http://en.wikipedia.org/wiki/Hydrochloric_acid
http://en.wikipedia.org/wiki/Hydrogen_peroxide
Hi ifrythings
First I make PCB
Then I do everything from here
Only the etching is diffrent then my. I use Hydrochloric acid and Hydrogen peroxide with a lot of water. Ratio is let say 1:1:20, don't really know because I do it by the eye
http://en.wikipedia.org/wiki/Hydrochloric_acid
http://en.wikipedia.org/wiki/Hydrogen_peroxide
luka, thats very complicated...
I was told a way to do it was to print your design onto photo-paper using a laser printer, then you iron it onto the copper surface, after that you put into water and rubb away the paper then etch.
BTW isn't Hydrochloric acid hard to get?
And heres a pic of my SMPS controler (SG3525, 100KHz clock) for 12V system (still a few bugs in it, hence the semi-black resistors)
I was told a way to do it was to print your design onto photo-paper using a laser printer, then you iron it onto the copper surface, after that you put into water and rubb away the paper then etch.
BTW isn't Hydrochloric acid hard to get?
And heres a pic of my SMPS controler (SG3525, 100KHz clock) for 12V system (still a few bugs in it, hence the semi-black resistors)
Attachments
Hi
The way you was told is called laminating. This process is hard until you find the correct temp of iron, duration of heating, what paper is good to use. This is probably my favorite way, if you know how to do it, but still I don't think it is good for large boards but for small is it fastes.
Complicated,... not at all, just sound like that
You just have to try it too see that it is no harder than any other, downside is just that you have to spray the board, and wait,wait,... to dry.
Not here, almost in any cemical shop
Black resistors? From what, they shouldn't be heating up...
Do you have shema for it?
The way you was told is called laminating. This process is hard until you find the correct temp of iron, duration of heating, what paper is good to use. This is probably my favorite way, if you know how to do it, but still I don't think it is good for large boards but for small is it fastes.
Complicated,... not at all, just sound like that
You just have to try it too see that it is no harder than any other, downside is just that you have to spray the board, and wait,wait,... to dry.
Not here, almost in any cemical shop
Black resistors? From what, they shouldn't be heating up...
Do you have shema for it?
Resistor(s) got black because my ground clip touched it and I didn't notice until I saw a bit of smoke .
Schematic is in SG3525 Problem
BTW the guy told me to get #471865 photo glossy paper from staples. He says it works perfect.
P.S he has a class of grade 8's and 10's able to do this process so I can't see it being too difficult.
.Schematic is in SG3525 Problem
BTW the guy told me to get #471865 photo glossy paper from staples. He says it works perfect.
P.S he has a class of grade 8's and 10's able to do this process so I can't see it being too difficult.
Hi
I suppose you will have to try yourself. The thing is that if the heat is too low the "ink" woun't go off the paper and onto board, and if too high the "ink" will be too hot and woun't same shape as before aka. tracks will be more wide then you want them to be.
Paper that you say can be good, but I saw guy that used paper from one of let say clothes catalog wich you get for free to home.
http://www.youtube.com/watch?v=snileUK7PQg
http://video.google.com/videoplay?docid=-1780986641521809521&q=PCB&hl=en <--- this one I mean
I suppose you will have to try yourself. The thing is that if the heat is too low the "ink" woun't go off the paper and onto board, and if too high the "ink" will be too hot and woun't same shape as before aka. tracks will be more wide then you want them to be.
Paper that you say can be good, but I saw guy that used paper from one of let say clothes catalog wich you get for free to home.
http://www.youtube.com/watch?v=snileUK7PQg
http://video.google.com/videoplay?docid=-1780986641521809521&q=PCB&hl=en <--- this one I mean
luka said:
wow that is impressive..
I always thought paper quality had to be decent for good results (I use staples photo paper). Must be that he gets such even heat + pressure from the rollers used. I couldn't replicate that with my iron.
btw the red bottle says "Rothenberger, Rosol 3, Fittingslötpaste, Sn97Cu3"
Some sort of solder paste for use on copper pipes.
Hi
Not really. I have tried with paper of magazin that comes with morning paper, and in 2nd try I think I've made it good enought for eatching, first one was with too high temp.
Smooth paper in probably the best, as long as it does't have any ink that melts with temp. on it, like bill from restaurant, that one became all black
Not really. I have tried with paper of magazin that comes with morning paper, and in 2nd try I think I've made it good enought for eatching, first one was with too high temp.
Smooth paper in probably the best, as long as it does't have any ink that melts with temp. on it, like bill from restaurant, that one became all black
![Flea_PSU_CD67[1].JPG](/community/data/attachments/128/128251-c863dc9e51104e90ea33ce1c1d059472.jpg)
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