Finger membrane

1, a piece of children's plasticine, which is available in big shopping malls.

2. A bottle of silicone for building decoration is available in decoration shops. Buy it and go to B&Q.

3. Small mirror.

working methods

1. Press plasticine on the small mirror to flatten one side.

2. Tighten the finger to be fingerprinted, press the plane of plasticine, and pause for 5 seconds.

3. Observe whether the concave fingerprint is clear. If you are not clear, please repeat 1-2.

4. Inject silica gel into the center of the depression and fill the depression by its own tension. This is the key to success. Do not move the position of the silicone bottle to fill, it is easy to have gaps.

5. After 12 hours, it can be used. Don't press the silicone finger too hard.

Question 2: How to make a fingerprint punch?

Question 3: Is fingerprinting a crime? The situation here is very complicated. Let's briefly analyze two points:

First of all, it is impossible for you to apply for a production license and a business license to manufacture finger molds. Therefore, you are engaged in illegal business, and you will be subject to administrative punishment if you are investigated. If there are serious consequences because you make fingerprints, then you are suspected of illegal business.

In addition, if you know that others use fingerprints for illegal purposes or crimes, and you do it for them, then you are a criminal.

So, I suggest you don't take risks.

Question 4: How to make a fingerprint film There are probably four technological methods to make a fingerprint film on the market (taking fingerprints is an important step, and the quality of fingerprint recognition also determines the sensitivity of fingerprint film recognition). Let's introduce them separately:

1. Take fingerprints with plasticine: press your finger on plasticine, knead it, and then gently take it out. There will be fingerprints on plasticine, which is the worst, because plasticine itself is soft and rough, and it will be a little deformed when it is taken out, so the fingerprint part will also be deformed.

3. Take fingerprints with gypsum hydrate: stir with gypsum powder and a certain proportion of water until it is thick, and then apply it to your fingers. The fingerprints taken by this method will be slightly better than the above two. However, it is necessary to control the mixing time and application time of hydrate, and to prepare clocks and watches, which takes a long time and is more complicated. It is not easy for beginners to do it, and inexperienced people often can't do it well.

4. Take fingerprints on a special stamp pad: We will prepare a medical low-temperature and wax stamp pad. You just need to melt the surface of the fingerprint area with a lighter, and then press your finger and let it stand for more than ten seconds to take it out. At the same time, after the wax oil melts into liquid, the texture is very delicate and the melting degree is very uniform, so the fingerprint taken out is the best of the four methods.

Question 5: How to make a fingerprint film? Simply do it. There is no law to identify it as a criminal act for the time being. However, if someone uses fingerprint film to commit criminal activities, they may be jointly and severally investigated for responsibility.

Question 6: I want to do fingerprints. Where can I go to the jewelry store to ask?

Question 7: What is the glue used to make finger molds? I don't know what kind of request you want. If you want to use it again and again without trace, then go to Baidu search (Gu Wei glue), which is very useful.

Question 8: How to heat a candle as a fingerprint candle?

Question 9: How to make fingerprint film 1? Take fingerprints with plasticine: press your finger on plasticine and gently take it out. There is a fingerprint sample on the plasticine, and fingerprints can be taken out. Because the plasticine itself is soft and the surface is rough, the finger will be deformed when it is taken out, so the fingerprint part will also be deformed;

2. Using gypsum hydrate as fingerprint: mixing gypsum powder with a certain proportion of water and then smearing it with your fingers to make a sample will be slightly better than the two. During the control, it is necessary to control the mixing time and coating time of hydrate and prepare the clock. Novices are too complicated to do easily, and they often have no experience and can't do well;

3. Extract fingerprints from a special pad: We will prepare a medical pad for low temperature and wax printing. You only need to melt the surface of the fingerprint area with a lighter, and then press it with your fingers and let it stand for more than ten seconds to take it out, that is, wax oil melts into liquid at the same time, with fine texture and uniform melting degree.