All posts by David Zhang

Everything About Quick & Easy Haircut

Professional barbers do good haircuts because they have talent and have years of practice. For an average amateur to compensate for the lack of experience, then it becomes critical to have proper tools to guard against mistakes and to speed up your learning. In this video we introduce 13 special tools, some of which are commercially available but you may not have heard of, and some of which are created by us and do not cost you anything. Regardless of the cost, it pays to spend the money or time effort to have those tools because you will recoup the investment by saving thousands of dollars on haircuts over your lifetime.

In our previous video https://youtu.be/H2TUoGtAVkM we discussed short hair. If you keep longer hair on the top section, this video https://youtu.be/Yami2wd1Tg8 includes 8 different haircut experiments to show you what it would look like when you cut to different hair lengths. You may have already heard advice from professionals, but these videos show you that as a beginner, for some of the practices, you may have to do the opposite in order to lower the “bad haircut” risk. They are a must-see before you cut your own hair.

A lot of people are afraid of doing a self-haircut because they fear irreversible mistakes. But even if you do have a family member to help instead of doing a self-haircut, the techniques discussed in this video certainly will help your helpers have more confidence, save their time, and improve the quality of what they do, so this video is not just limited to self-haircutting.

For lockdown and stay-at-home orders, we also made a few other videos:
When you go out shopping or bring in things you have purchased after your trip, have you investigated every step so that you have the lowest probability of picking up invisible germs? In this https://youtu.be/3xNTNRehrE4 video, we share with you things we do to minimize the risks. Depending on your own situation, you should examine your process to see if you have additional possibilities of cross contamination, and you can modify based on the principles we discuss in this video.

We have quite a few other videos about face masks and shields (PPE). For masks, we use higher pressure to test filters in https://youtu.be/8mCPB8n065Y. If your material led to a different conclusion, i.e. filter 1 is better than filter 2 under one pressure but the opposite is true under another pressure, please let us know because we have yet to find such a case. Is your face mask effective? How do you test the quality of your mask, especially your own DIY masks? In this video, https://youtu.be/25lDoBSsQG8 I have given you multiple strategies, you may choose to use some of them depending on what you have, and varying materials, different particles and different tools. This video can also be used to check filtering effectiveness for things other than masks such as DIY vacuum bags, DIY air purifier filters etc.

After our video “DIY face masks in 10 seconds & improve cheaper masks” https://youtu.be/Wg-cwD4Edac went viral, our viewers asked us many questions about reducing the gaps. This video shows you how to reduce the side gaps with no cost, and with filters being used efficiently: https://youtu.be/79cleCN1oiY Please subscribe to our channel, we will be making more similar videos.

Besides the issues of face mask shortage, we also have experienced a shortage of toilet paper. What do you do if toilet paper is sold out and using other kinds of paper will clog the pipes? Americans use an average of 23.6 toilet paper rolls per person a year. Here is my DIY solution to resolve that problem:
https://youtu.be/ZWQ3UG6hGzo
The best part — it won’t cost anything.

What do you do if face shields are in short supply? Face shields are especially critical for medical staff, but a lot of suppliers are out of stock. This video will show you how to make your own, with two different designs you can choose from:
https://youtu.be/e8_guxtEYqg

Have you ever tested how effective your handwashing is? You still get a cold every year even though you swear that you washed your hands very well, right? This video will provide a way for you to test your handwashing skills or you can use this as a way to convince your kids to wash hands well. Also this test method can help us to try different methods.
https://youtu.be/-YrBEj1fSPU

Smallest Probability of Infection During or After a Shopping Trip

When you go out shopping or bring in things you have purchased after your trip, have you investigated every step so that you have the lowest probability of picking up invisible germs? Here we will share with you things we do to minimize the risks. Depending on your own situation, you should examine your process to see if you have additional possibilities of cross contamination, and you can modify based on the principles we discuss in this video.

In our previous video https://youtu.be/H2TUoGtAVkM we discussed short hair. If you keep longer hair on the top section, this video https://youtu.be/Yami2wd1Tg8 includes 8 different haircut experiments to show you what it would look like when you cut to different hair lengths. You may have already heard advice from professionals, but these videos show you that as a beginner, for some of the practices, you may have to do the opposite in order to lower the “bad haircut” risk. They are a must-see before you cut your own hair.

A lot of people are afraid of doing a self-haircut because they fear irreversible mistakes. But even if you do have a family member to help instead of doing a self-haircut, the techniques discussed in this video certainly will help your helpers have more confidence, save their time, and improve the quality of what they do, so this video is not just limited to self-haircutting.

Special Tools you can use for haircut: https://youtu.be/d7Q_LA_Cmzc

We have quite a few other videos about face masks and face shield (PPE). For masks, we use higher pressure to test filters in face masks or filter tests under different pressure
If your material led to a different conclusion, i.e. filter 1 is better than filter 2 under one pressure but the opposite is true under another pressure, please let us know because we have yet to find such a case.

Have you ever questioned the validity of those odd face mask tests you come across? Some of the tests can be backed by science, but others are just promoted for the dramatic effect to attract eyeballs. Check out “Myths & Debunks: 7 Face Mask Effectiveness Tests at Home” 7 Face Mask Effectiveness Tests at Home

After our video “DIY face masks in 10 seconds & improve cheaper masks” DIY face masks in 10 seconds went viral, our viewers asked us many questions about reducing the gaps. This video shows you how to reduce the side gaps with no cost, and with filters being used efficiently: reduce the side gaps with no cost Please subscribe to our channel, we will be making more similar videos.

Is your face mask effective? How do you test the quality of your mask, especially your own DIY masks? In this video, test mask quality
I have given you multiple strategies, you may choose to use some of them depending on what you have, and varying materials, different particles and different tools. This video can also be used to check filtering effectiveness for things other than masks such as DIY vacuum bags, DIY air purifier filters etc.

Besides the issues of face mask shortage, we also have a shortage of toilet paper. What do you do if toilet paper is sold out and using other kinds of paper will clog the pipes? Americans use an average of 23.6 toilet paper rolls per person a year. Here is my DIY solution to resolve that problem:  no more toilet paper shortage The best part — it won’t cost anything.

What do you do if face shields are in short supply? Face shields are especially critical for medical staff, but a lot of suppliers are out of stock. This video will show you how to make your own, with two different designs you can choose from: DIY face shield

In addition to using a good particle filtering material, a tight seal is also important: Custom, Tightly Fit DIY Face Mask

Have you ever tested how effective your handwashing is? You still get a cold every year even though you swear that you washed your hands very well, right? This video will provide a way for you to test your handwashing skills or you can use this as a way to convince your kids to wash hands well. Also this test method can help us to try different methods.  simple proper hand washing

All Different Mask Testing Methods at Home

https://youtu.be/8mCPB8n065Y

When you test filter materials at home, you may have different particles available to you to use or different equipment to detect the particles. Therefore one method may not suit all your needs. In this video I am going to show you 3 levels of particle filtering tests I have invented for your face masks or filters. These presentations are improved and updated a bit from the previous videos in which they were shown.

Many viewers commented on our previous video questioning the validity of higher pressure tests. We answered the questions and believe our test is a reasonable extrapolation. If your material led to a different conclusion, i.e. filter 1 is better than filter 2 under one pressure but the opposite is true under another pressure, please leave comments below because we have yet to find such a case.

In this video, we mention our previous video of “Easiest & Cheapest Way To Fix an Overheated Laptop In 30 seconds.” If your compressor gun is different than the one in the gas station and you are unable to connect to the bottle, I offered a simple solution in that video, here is the URL Clean laptop in 30 seconds

Have you ever questioned the validity of those odd face mask tests you come across? Some of the tests can be backed by science, but others are just promoted for the dramatic effect to attract eyeballs. Check out “Myths & Debunks: 7 Face Mask Effectiveness Tests at Home” 7 Face Mask Effectiveness Tests at Home

After our video “DIY face masks in 10 seconds & improve cheaper masks” DIY face masks in 10 seconds went viral, our viewers asked us many questions about reducing the gaps. This video shows you how to reduce the side gaps with no cost, and with filters being used efficiently: reduce the side gaps with no cost Please subscribe to our channel, we will be making more similar videos.

Is your face mask effective? How do you test the quality of your mask, especially your own DIY masks? In this video, test mask quality
I have given you multiple strategies, you may choose to use some of them depending on what you have, and varying materials, different particles and different tools. This video can also be used to check filtering effectiveness for things other than masks such as DIY vacuum bags, DIY air purifier filters etc.

Besides the issues of face mask shortage, we also have a shortage of toilet paper. What do you do if toilet paper is sold out and using other kinds of paper will clog the pipes? Americans use an average of 23.6 toilet paper rolls per person a year. Here is my DIY solution to resolve that problem:  no more toilet paper shortage The best part — it won’t cost anything.

What do you do if face shields are in short supply? Face shields are especially critical for medical staff, but a lot of suppliers are out of stock. This video will show you how to make your own, with two different designs you can choose from: DIY face shield

Have you ever tested how effective your handwashing is? You still get a cold every year even though you swear that you washed your hands very well, right? This video will provide a way for you to test your handwashing skills or you can use this as a way to convince your kids to wash hands well. Also this test method can help us to try different methods.  simple proper hand washing

https://twitter.com/HygoNews/status/1250956897051529217

Custom, Tightly Fit DIY Mask With Easy Filter Replacement In 3 Seconds

https://youtu.be/79cleCN1oiY

Does your surgical mask or DIY face mask have gaps on the sides? Ignoring this question is unsafe and you risk your own health. This is increasingly important when the experts are changing their strategies and asking healthy people to wear masks. Another problem is that good filter materials are expensive. Today I am going to show you how to reduce the side gaps with no cost, and with filters being used efficiently.

After our video “DIY face masks in 10 seconds & improve cheaper masks” https://youtu.be/Wg-cwD4Edac went viral, our viewers asked us many questions about this topic. One question is about using wires to reduce the gaps. This is another way to solve the problem of side gaps. It is a very easy solution although it does not provide a solution for you to change filters. Please subscribe to our channel, we will be making more similar videos.

Is your face mask effective? How do you test the quality of your mask, especially your own DIY masks? In this video, https://youtu.be/25lDoBSsQG8
I have given you multiple strategies, you may choose to use some of them depending on what you have, and varying materials, different particles and different tools. This video can also be used to check filtering effectiveness for things other than masks such as DIY vacuum bags, DIY air purifier filters etc.

Besides the issues of face mask shortage, we also have a shortage of toilet paper. What do you do if toilet paper is sold out and using other kinds of paper will clog the pipes? Americans use an average of 23.6 toilet paper rolls per person a year. Here is my DIY solution to resolve that problem:
https://youtu.be/ZWQ3UG6hGzo
The best part — it won’t cost anything.

What do you do if face shields are in short supply? Face shields are especially critical for medical staff, but a lot of suppliers are out of stock. This video will show you how to make your own, with two different designs you can choose from:
https://youtu.be/e8_guxtEYqg

Have you ever tested how effective your handwashing is? You still get a cold every year even though you swear that you washed your hands very well, right? This video will provide a way for you to test your handwashing skills or you can use this as a way to convince your kids to wash hands well. Also this test method can help us to try different methods.
https://youtu.be/-YrBEj1fSPU

https://twitter.com/RealGeniusAsian/status/1247935145551618049

How Effective Is Your DIY Face Mask? Easy Home Test

https://youtu.be/25lDoBSsQG8

Is your face mask effective? How do you test the quality of your mask, especially your own DIY masks? Avoiding this question is unsafe and you cheat your own health. This is increasingly important when the experts are changing their strategies and asking healthy people to wear masks. You may think you don’t own a lab or you are not a scientist, but today I will show you how to do it at home without special tools.

After our video “DIY face masks in 10 seconds & improve cheaper masks” https://youtu.be/Wg-cwD4Edac went viral, our viewers asked us many questions about this topic. The number 1 question is what materials one can use, and many people suggested various different kinds of materials. We’ve been busy answering viewers’ questions. Here we will demonstrate additional materials for masks. Please subscribe to our channel, we will be making more similar videos.

I have given you multiple strategies, you may choose to use some of them depending on what you have, and varying materials, different particles and different tools. This video can also be used to check filtering effectiveness for things other than masks such as DIY vacuum bags, DIY air purifier filters etc. Please leave comments on your particular problems. Sharing your tips and experiences will help others as well.

Besides the issues of face mask shortage, we also have a shortage of toilet paper. What do you do if toilet paper is sold out and using other kinds of paper will clog the pipes? Americans use an average of 23.6 toilet paper rolls per person a year. Here is my DIY solution to resolve that problem:
https://youtu.be/ZWQ3UG6hGzo
The best part — it won’t cost anything.

What do you do if face shields are in short supply? Face shields are especially critical for medical staff, but a lot of suppliers are out of stock. This video will show you how to make your own, two different designs you can choose from:
https://youtu.be/e8_guxtEYqg

Have you ever tested how effective your handwashing is? You still get a cold every year even though you swear that you washed your hands very well, right? This video will provide a way for you to test your handwashing skills or you can use this as a way to convince your kids to wash hands well. Also this test method can help us to try different methods.
https://youtu.be/-YrBEj1fSPU

https://twitter.com/HygoNews/status/1245907915099090944

How To Make The Best DIY Face Shield In 2 Minutes

https://youtu.be/e8_guxtEYqg

What do you do if face shields are in short supply? Face shields are especially critical to medical staffs, but a lot of suppliers were out of stock. I will show you how to make your own, two different designs you can choose from. You don’t need to go to Home Depot or a local craft store to get the raw materials, I will show you to use what you already have. It is free and high quality design, you probably have seen some other designs, many of them leave a large gap at the top. If heavy droplets containing germs land on top, they are likely to slip through the gap, so my design is better.

My design is so simple everyone should be able to do it. And it will cost you nothing. With the shortage of Personal Protective Equipment (PPE Shortage), homemade face shields may be your only option, please share this video to help others. Of course if you have standard PPEs, you should use them. In addition to medical use, face shields are also used in the lab when you may have some hazard. I use the one with lift-front shield, I use it in my own garage when I have to use different tools and a lot of DIY experiments. It is important to protect yourself.
https://twitter.com/RealGeniusAsian/status/1243962751099142144

Avoid Viruses With This Simple 3-Step Handwashing Method (And Other Tips)

https://youtu.be/-YrBEj1fSPU
Have you ever tested how effective your #handwashing is? You still get a cold every year even though you swear that you washed your hands very well, right? We will provide a way for you to test your handwashing skills or you can use this as a way to convince your kids to wash hands well. Also this test method can help us to try different methods. Since we need to wash frequently, no one wants to spend a lot of time, thus we want to find an efficient as well as effective method. Since an average person’s working memory is only 3 or 4 items, most people prefer not to memorize a 7 step set of instructions. In this video I will show you my simple 3-step hand washing method.

Teaching correct technique to people around you is important because other people may harbor germs and increase the density of viruses around you. Even if you have mastered the 6-step handwashing recommended by the World Health Organization (WHO), many people can’t do it and it is to your benefit to help them improve their techniques. It is not easy to train kids to do it properly, you need to explain the reasons and demonstrate in a way they will never forget. We will explain why you need 20 seconds to wash your hands, where to start the time and how to count the time without a timer.
https://twitter.com/HygoNews/status/1242934921351401472

Bidet seat: Easy installation, Fixing Leaks & Other Issues

https://youtu.be/JE7FN5H5Thg?t=4
A bidet can reduce toilet paper usage and it may be the only solution when you are forced to stay home all the time, toilet paper is sold out, and using other kinds of paper will clog the pipes. Today we are going to show you how to easily install a bidet seat. We try to provide a comprehensive guide on various different bidets and detailed installation. If you have questions in terms of functionality or installation, please feel to leave your comments below.

Even though bidet seat installation is quite easy, some people may still not feel up to the tasks. In that case, you can buy a portable bidet. If you are interested in a free portable bidet, you can watch my other video on 4 Ways to Make a Free Portable Bidet using simple materials you already have. Here is the URL:
https://youtu.be/J3EUpRbrShg?t=4
It is worth noting that an inexpensive bidet seat does not offer a feminine wash, only the high-end unit has front wash features. Anyway, in general there are bidet solutions that are not that expensive and easy to install. You can recoup the money pretty fast. Plus it is cleaner and better for your skin, brings comfort to people with hemorrhoids, prevents toilet clogs and is better for the environment.

Americans use an average of 23.6 toilet paper rolls per person a year. A bidet could be the best way to reduce that quantity.

Disclosure: I did receive this NuFlush bidet seat unit at no cost in exchange for reviewing the product.

https://twitter.com/RealGeniusAsian/status/1242501447113035777

If you are interested in a bidet seat made by BioBidet , you can watch my other video on how to install a simple #bidet seat, here is the URL: https://youtu.be/silYA2vWgRM

5 Ways to make a free portable bidet, reduce use of toilet paper

https://youtu.be/ZWQ3UG6hGzo
What do you do if toilet paper is sold out and using other kinds of paper will clog the pipes? Americans use an average of 23.6 toilet paper rolls per person a year. A bidet could be the best way to reduce that quantity. Today I am going to show you how to make four different DIY portable bidets, using simple materials you already have.

If you are interested in a bidet seat, you can watch my other video on how to install a simple bidet seat, here is the URL:
https://youtu.be/silYA2vWgRM

It is worth noting that an inexpensive bidet seat does not offer a feminine wash, only the high-end unit has front wash feature. So still this video of portable bidet can benefit the needs of female users for front wash if you have a lower-end bidet seat. Anyway, in general there are bidet solutions that are not that expensive. You can recoup the money pretty fast. Plus it is cleaner and better for your skin, brings comfort to people with hemorrhoids, prevents toilet clogs and is better for the environment.

https://twitter.com/RealGeniusAsian/status/1238173898958495744

For more detials, check out:
http://geniusasian.com/5-free-portable-bidet/

Detect wires without X-ray vision or special tools

https://youtu.be/uz2fekHlBgw

A lot of the time, you suspect an electric wire is broken, but would like to confirm where it actually broke. Other times you simply want to locate wires placed behind a wall. Without any expensive tools, I will show you how to use two cell phones to do this.

Your project and environment could be uniquely different, so this video only provides an idea to inspire you to solve your own problem. Note that if you are dealing with high voltage circuits, you need to turn them off to be safe.

Subscribe to my channel because my invention is unique and I bet you have never ever seen anything like this before. Please share this with your friends. I know earbuds are cheap, but for the sake of environment, please attempt to fix them instead of throwing them into a landfill.

https://twitter.com/RealGeniusAsian/status/1229530353175412736