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How to make a printed circuit board using the LUT method

Video / Electronics
Added 8 comments



Lovers electronic homemade have long known that printed circuit boards can be manufactured in home conditions. We suggest that you familiarize yourself with the material in which we will consider a method of manufacturing printed circuit boards using the LUT method or laser-iron technology. The essence of this technology is in the thermal transfer of toner, followed by etching.

The author of the video, which we suggest watching right now, shows the method using the example of the Marx Generator



What we need:
- laser printer;
- a computer;
- textolite;
- scissors for metal;
- solvent;
- Nitric acid.

Not all laser printers are suitable for LUT PCB manufacturing. The printer that the author uses has gone out of official production, however, you can find information on suitable printers on the network.

So, first of all, we need to draw a circuit diagram in a graphics editor on a computer. To draw a diagram, the author uses the program "Sprint Layout". After that, you need to print the resulting image in a mirror image.



For printing, it is recommended to use glossy photo paper for inkjet printing measuring 10 by 15 cm. You need to print on the glossy side.



Next, we take the textolite and cut the piece to the size of the board with scissors for metal. Degrease textolite with solvent.



We apply the printed pattern to the PCB and iron it with a heating close to maximum. The resulting image is then mirrored in relation to the printed image.



Now for cooling we hold the paper under a stream of water. Tear off the paper from the PCB.



Pieces of paper will definitely remain on the future board. They can be removed with an unnecessary toothbrush.





After that, you can start etching. You can use any available tool for this. The author uses nitric acid, which can be replaced with ferric chloride, ammonium perchlorate, a mixture of hydrogen peroxide, citric acid and salt, as well as a mixture of copper sulfate and salt. For complete etching, you need 2-3 minutes.





We actively wash the circuit board with water and wash the toner with solvent

We drill a board with a drill whose diameter is approximately equal to the diameter of the terminals.



Next, tin our board and solder the parts.



Cut the sticking out leads with wire cutters.



We remove rosin or active fluxes with alcohol.



To better protect the board from moisture from electrical breakdown, the author recommends covering it with a special polyurethane varnish.
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8 comments
+1
Reply To quote A complaint
I agree almost completely ... Yes, and I’ll add ... Those who have a “head” are disposable and are on a cartridge are very cheap. (Hence, the space cost of cartridges is also partly)))). And even "our people" with them - one hassle !!! Ciss in this - hemorrhoid to stupor. There, basically, there is no pump, ("thermal spitting)". Accordingly, ink from the "donors" can only be sucked up by the discharge formed ... And it will all be very sensitive in the position of the donors vertically relative to the cartridge ... So, you just don’t have to fool - the head is all the same, one-time and not long walks ...
But, regarding the fact that all household products are just like that - it’s not quite true. For example, I have Epson TX-650 printing photos. (The wife is "obsessed" with paper))). Recently served it - mileage of more than eight thousand sheets !!! (He is about 10 years old!) ... And nothing! Works!! I have never tried branded ink, and paper - at $ 6 per 100 sheets))))
Of course, I screwed the CISS to it myself. But it was a long time ago - now similar household models from the factory are often equipped with them already ... People are already fed up with cartridge-like ones ... I can’t get into it already ...
+2
Reply To quote A complaint
Household cheap inkjets are not just. This is a lure such as the "first dose free." They are specially sold at a lower price (cheaper than they cost in production). And then it pays off with cartridges that suddenly cost almost like the printer itself. And other supplies that the manufacturer strongly advises to buy only from him (only HP ink, only HP paper, etc.). But ours just can’t be taken, zeroing cartridges, CISS ... smile
However, yes, the cartridges should not be allowed to dry (more precisely, nozzles). At least once a month should be printed. Actually, it’s time to do this.
0
Reply To quote A complaint
By printer. Inkjet is not suitable for LUT. maybe ink is absorbed there. into the paper. And the ink is different for different printer models. I was wondering why inkjets are relatively cheap. So there the problem place is the drying of the ink in the print head. Therefore, the rule of their work is to print and print (use) the cartridge without long interruptions. And throw them away often ...
Recently I tried LUT on my laser (Lexmark Optra E310). It does not print boldly (sales on Print Density: Dark). Yes, even on printing paper (not photo paper). It didn’t work out ...
0
Reply To quote A complaint
Or maybe you can make a mixture for inkjet printers suitable for printing printed circuit boards?


It is impossible.
+1
Reply To quote A complaint
You have some very childish and unrealistic requests. Have you tried using Google?
For LUT, the printer is ONLY a laser. There are no specific criteria, but older models are preferable; they print with a good bold layer. The new ones use all kinds of saving technologies; as a result, the print is not always good enough to transfer it.
For inkjets there is a technology - photoresist.
Ratio 100 ml 3% perikisi, 30 g of citric acid, 5 g of salt
At the expense of ink, I will probably do so


I have HP Deskjet 2280, ink on it costs 250 rubles per can 200 ml black or 500 rubles for 4 cans of 100 ml in all colors. I’m printing for a hobby, I bought it last half a year ago, the banks are almost full ...
Z.Y. This is offline, without any Alikov.
Evgeny Alekseevich Kaptelov 0
Reply To quote A complaint
Can you tell me your method of manufacturing and bullying printed circuit boards? Thanks in advance!
Evgeny Alekseevich Kaptelov 0
Reply To quote A complaint
Hello everyone! And which printer (or printers) is suitable for printing a picture of boards? Can I clarify the brand, or some features and differences from the rest? How should it (the printer) differ from others? Can I use inkjet printers? I have them, as many as two "HP". The truth is both without ink. By the way, how to make ink for them? On Alik, they are very expensive. Maybe someone knows the ink recipe for HP C 4343, and HP Deskjet 2130? Or maybe you can make a mixture for inkjet printers suitable for printing printed circuit boards? Tell me please. ............ And in what ratio do you make a solution of hydrogen peroxide and salt for etching?
0
Reply To quote A complaint
With the help of photo paper and nitric acid, LUT is of excellent quality !!! It’s only a little expensive, although if it doesn’t matter for a loved one =) There is a cheaper method and solution, which is available in the first place (sold everywhere in household magazines), and save on photo paper! And really a class !!!;) The truth is etched for 5 minutes longer =)

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