Author: David Zhang
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15 Ways To Not Smash Your Fingers With a Hammer
youtube After comprehensive research on this topic including visiting the Hammer Museum in Alaska, we present you with these 15 tips. We systematically analyzed the processes and the components involved. For the first few tips we have invented, I guarantee you have never seen anything like these before. Because there are many different sizes of…
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The easiest and the cheapest way to purify the room air
youtube The smoke from California fires caused air purifiers to be sold out at many locations. Today I am going to show you how to use what you have or can probably still get, to the room air clean. Compared with the expensive air purifiers on the market, these DIY air purifiers are equivalent but…
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Build an easy & free home security system in under 5 minutes
youtube The first part of this video is about how to quickly build a free basic home security system in under 5 minutes. I have listed many options for you, but you don’t have to choose all of them, work with what you have and is the best for you. It is easy — if…
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How To Make A Free and Accurate Kitchen Scale
youtube This kitchen scale took me only a few minutes to make. My invention uses a few commonly available materials and tools. It is free and pretty accurate. It is also durable and easy to use. To improve the accuracy, I have provided a few guidelines to help you to understand the usage and find…
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How To Pour Engine Oil | NO FUNNEL,NO TOOLS
youtube Did you know there are actually 3 different ways to pour oil into your engine? Two of them you may already know. Today I’m introducing a new and unique third way. This is very useful for when you’re traveling and you find your oil level is low. You don’t have to buy a funnel…