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Recently, amateur radio amateurs have often and often used this technology to create amateur radio circuit boards. This technology is distinguished by its simplicity and reliability.
First, prepare a template for the future board.
The board, which is created by special programs for drawing boards, you first need to adjust the brightness and contrast. The template should have maximum brightness. After the board is ready, proceed to print. It is advisable to print several templates on one A4 sheet.

LUT Technology

LUT Technology


After the board template is ready, you need to cut it from the general sheet.
Next, we prepare foil-coated fiberglass or getinax, we clean the surface and cut into the dimensions of our board.

LUT Technology

LUT Technology


Turn on the iron and wait a couple of minutes until the last one warms up.

LUT Technology


Next, gently strengthen the paper template with a pattern on the circuit board, the circuit board pattern facing the foil!

LUT Technology


Then we begin to iron, make sure that the template adheres evenly to the foil. You need to iron it for 3 minutes, carefully throughout the board, pay strict attention to the edges of the board.
After finishing, let the PCB cool for 5 minutes.
After cooling, we take a vessel with water and wash our board. At the end, we get a clear portrait of the board on the surface of the foil fiberglass.

LUT Technology

LUT Technology


ETCHING.

For etching, I use a non-traditional method, which is not very often used among radio amateurs. For the chemistry of etching, we need 100mg of hydrogen peroxide (3% peroxide solution), two packs of citric acid (40gr each pack) and one teaspoon of table salt.

LUT Technology


Mix everything together and mix well until the salt and citric acid are completely dissolved.
The board is immersed in the solution, it is desirable to put the vessel with the solution in the sun, this accelerates the etching process.

LUT Technology


Small-sized boards (boards of bugs, multivibrators, etc.) are etched in 20-30 minutes.

LUT Technology

LUT Technology

LUT Technology

LUT Technology


One such solution is enough to etch more than 10 boards for bugs.
come back
Comments (13)
  1. Veent
    #1 Veent Guests August 23, 2012 22:13
    0
    Old technology, which instead of an iron is passed through a laminator. But thanks for the recipe for the etching mixture, I used to poison it with chlorine, but it is in the place where I take it quite expensive.
  2. feelloff
    #2 feelloff Guests August 23, 2012 22:15
    0
    What program can I draw a board?
  3. AKA
    #3 AKA Guests August 24, 2012 00:36
    0
    I personally did on light 6
  4. AKA
    #4 AKA Guests August 24, 2012 00:37
    1
    Only with a careful solution, it is poisonous, during the etching of the board (from the article), a terrible burn was burned on the skin
  5. astapenkoyurik
    #5 astapenkoyurik Guests October 14, 2012 11:36
    0
    Thanks for the recipe mix.
  6. Aspirin
    #6 Aspirin Guests November 16, 2012 03:23
    0
    easy recipe mix
  7. V.A.L.E.K.
    #7 V.A.L.E.K. Guests December 29, 2012 09:27
    0
    my dad does this, but I can’t guess everything
    thank
  8. Scorpio
    #8 Scorpio Guests March 1, 2013 17:40
    0
    What is this board for?
  9. dominus
    #9 dominus Guests March 30, 2013 01:59
    1
    Forgot to mention that you need to print on a laser printer.
  10. Yuri
    #10 Yuri Guests May 28, 2013 11:50
    0
    I was printing on transparencies for laser printers
    removed without any soaking, and the result is better
  11. asid
    #11 asid Guests July 2, 2014 22:35
    1
    The foil must be degreased at least before application of the drawing, and it is better to lower it into the friction solution for 3-5 seconds. Chlorine. Iron IMHO is better. And warm up not 3 minutes. otherwise the whole picture will spread out and if the tracks are thin and close to each other, then there will be trouble. And yet, it is better to take Paper from magazines (glossy). It is much easier to separate from the board, and forgives more sloppiness and overheating.
    1. Vladimir Anisimov
      #12 Vladimir Anisimov Guests January 7, 2018 9:03 p.m.
      0
      It would not hurt to clarify the temperature of the iron
  12. maxibox
    #13 maxibox Guests May 22, 2018 12:58
    0
    Yeah. And it would not hurt to mirror the board before printing)) I switched from LUT to photoresist and laser illumination of the picture. LUT now seems to be such a haemo swarm)

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