Specification:
Condition: 100% brand new
Approximate weight: 55 g / 1.9 ounces.
Size: approx. 1 x 0.3 m / 3.3 x 1.0 feet.
Package list:
1 x light-sensitive dry film.
Operating steps:
1. Release the film, the light-sensitive film is trapped between the two layers of film, first tear off one side, slightly difficult to tear, try a few more
2. Then film, the copper plate can be easily cleaned, flattened, try not to have bubbles
3. After paste, the iron is heated slightly, not too hot to fix
4. PCB film, it is recommended to use film, you can achieve the highest fineness if you do not need precision with sulphuric acid paper to print.
5. Exposure, place the printed pattern on the light-sensitive plate, use ordinary energy-saving lamps for about 30 minutes, if there is an exposure machine for 1 minute, the sun has not been tried, it should take about 15 minutes, the exposure. The process is obvious, because the light-sensitive ilm changes at at Beleleldirection its colour and changes from light to dark blue. You will easily see that your wiring diagram appears on the board.
6. Develop, remove another protective film, place it in the developer (developer is 1:100 water, 10 grams of water, 1 litre of water) and wipe over the plate with a cotton swab with a little force during development.
7. Etching, this is naturally a water-saturated etching solution.
8. After etching, remove the film, remove the film by 1:60 or 70 and soak the plate for a few minutes.