The Shop > Electronics & IC Programing

How do you do your PCBs?

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sparky961:
Further to my previous reply, I definitely prefer UV presensitized boards but if you mess up its more costly 'cause you can't just remove the resist and try again. The benefit is very fine traces and crisp edges.

Last time I wanted a board I just ordered it online. Can't beat the quality, delivery was quick, no mess or chemicals to deal with. Price is still up there but only if you consider your time free.

PekkaNF:
Thank you

I'll try Bungard pre sensitized boards and normal laser printer transparencies.

I may try thermal tranfer paper method too, just to have something to compare and that looks like a cheap method.

I do have few UV-tubes, really should build the exposure box. I even bought the acryllic and specially asked the non UV filtering type and got the UV filtering type. Surpricingly I found out too that much of the windlow class has UV filtering...Probably should buy the cheapest picture frames there are to get few correct size glass panels, I'm sure they have no UV protection!

Pekka

efrench:
I'm in the process of designing my first PCB.  This is the process I'll probably use to create the board:
http://quinndunki.com/blondihacks/?p=835

The board itself will be about 2"x2" with 150 odd holes.

CrazyModder:

--- Quote from: PekkaNF on January 19, 2016, 11:59:01 PM ---I may try thermal tranfer paper method too, just to have something to compare and that looks like a cheap method.

--- End quote ---

Sure. In Germany people  traditionally use pages out of the printed catalogue of one of the big electronics shops, for whatever reason that seems to work best (or it is simply because people who do things like this have this kind of catalogue lying around :) ).


--- Quote ---I do have few UV-tubes, really should build the exposure box.

--- End quote ---

I have one of those old sunlights (I think it is a "Philips HB 171/A" or similar to it) and just prop it up on something when I need it, I didn't feel the need for a proper box yet.


--- Quote --- I even bought the acryllic and specially asked the non UV filtering type and got the UV filtering type. Surpricingly I found out too that much of the windlow class has UV filtering...Probably should buy the cheapest picture frames there are to get few correct size glass panels, I'm sure they have no UV protection!

--- End quote ---

 :D

awemawson:
I worked in an electronics lab at Mullards Southampton back in the late 1960's where we had a thing like an Etch-O-Sketch, manually operated you put a clear but coated  film on the bed and shaved the waxy coating off leaving clear track that was then reproduced photographically. The waxy coating was red. When you made a mistake there was a bottle of correcting fluid to cover your mistakes.

Somewhere I too have transfers like Phil's, also a 'tape pen' that lays down tracks from a reel onto your art work.

Then of course there was the 'Dalo Etch Resistant Pen' that you drew your tracks directly onto the copper.

Then 'someone' (me!) found that a thick layer of layout blue was a good etch resist, and was flogging it as such in adverts in the back of Practical Wireless and Wireless World in little bottles. That was in the early 1970's

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