A package can etch 10*15cm single panel of more than 10 pieces.

First, the advantages: (compared with ferric chloride)

A, the solution is colorless and clear, no more dirty image;
B, the whole process of etching is clearly visible, and the highest precision is easily achieved;
C, no sludge, no dirty, no color stains on the clothes floor;
D, weakly acidic, few odorless, does not corrode the floor, and the safety is greatly increased.
Second, the use of instructions :

Etchant Preparation (clear plastic tray)

1. Dissolve the engraving agent in water at 1:4, ie a pack of 200 grams of etchant with 800 ml of water. In order to ensure the effect of use, the temperature at the time of etching is preferably 50 ° C or more. Therefore, the water can be heated to about 70 ° C and then placed in an etchant;
2. Shake the container gently or stir with a plastic rod to dissolve the etchant.

Etching Process

1. Dip the board to be etched into the etchant (the single-panel film faces up, and the double-panel should be placed in a hanging position, do not touch the bottom of the disk);
2. Shake the container gently, or brush the surface with a soft brush to ensure that the solution flows on the surface of the circuit board. It is obvious that the bare copper layer on the surface of the board gradually dissolves to expose the bottom of the board;
3. When the bare copper layer disappears completely and the plate base is translucent, the etching is completed, and the time is usually 5-15 minutes. During the etching process, the color of the solution changes from colorless to light blue, and a little blue-white crystal precipitates;
4. The board is taken out and rinsed with clean water. Visually inspecting the incomplete part without etching, it can be air-dried for the next step;
5. After the etching is completed, the remaining solution can be left for secondary use after filtering out the crystal precipitate until it is discarded.

Notes:

1. The etchant (liquid) is weakly acidic and non-toxic. Always wash your hands after use. If you accidentally get into your eyes, please rinse with water quickly.
2. Please store in a cool and dry place away from children;
3. The etching solution is used as soon as possible. The prepared etchant should not be placed in a closed container, because the solution will slowly decompose and release oxygen, which will cause the pressure inside the container to rise;
4. The etchant itself is non-toxic and harmless, but because the etching waste liquid contains copper ions (heavy metals), please use alkaline substances such as soda ash or lime before disposal, and then dispose of them properly.

When corroding the copper clad plate, be sure to shake the corrosion plate (clip the side of the CCL with a pair of chopsticks, let the CCL be tilted up and then sink again, repeat this action). Let the corrosive agent wash the CCL or corrode with a brush. Liquid brushed copper plate, if the copper plate is directly thrown into the corrosive liquid, it will cause a layer of material on the surface of the copper clad plate, which will not corrode at all. (I have seen a few sellers' comments because the copper clad plate is directly thrown into the corrosive liquid without corrosion, saying that our products are not good). In addition, the corrosive agent is exchanged with hot water, and the hot water temperature is about 80 degrees, so the corrosion effect will be accelerated! If you use cold water friends, you can directly lose the corrosive liquid without moving the board, no reaction is normal, if you use hot water, no response for more than 10 minutes, please insist, as long as the color of the corrosive liquid turns blue, it means The copper foil is corroded because the copper foil of the copper clad plate has a certain thickness. Although the copper foil is corroded, it is invisible to the naked eye. Some friends got more than 10 minutes, and the copper foil is still suspected to be fake. Our corrosives are useless. In fact, the copper foil was already corroded at that time, but because of the thickness of the copper foil, the naked eye could not see it. As long as you stick to it, you can see that the corners are corroded, and it is very fast to see the corners being corroded. It will take about 5 minutes to complete the corrosion.