10 tried and tested YouTube lessons

10 tried and tested YouTube lessons

You have seen YouTube tutorials. But do they actually work? SundayLife! tests 10 tricks being taught online.

1. Build your own air-conditioner

The weather is growing warmer but turning on the air-conditioning means a heftier power bill. So why not produce your own air-con unit? Get a large styrofoam box, cut a large hole in the lid and fit a fan in the hole so it can blow air into the box.

Cut another hole on the side of the box for cold air to escape. Then fill the box with bottles of solid ice, which you can make in your freezer.

Switch on the fan and enjoy your cheap "air-conditioning".

Does it work: Yes. If you cannot afford air-conditioning, this is a godsend. The air that comes out of the box can go below 20 deg C. Sit next to it and imagine you are in Genting Highlands.

If there is enough ice in the box - I used nine 1.5-litre bottles and 12 smaller bottles - your contraption might even be able to work about eight hours, enough to last you through the night.

But do not expect to cool your whole room with it.

The amount of air produced is too little to cause any major drop in the room temperature, so the best way to enjoy your DIY air-conditioner is to sit or sleep right next to it.

2. Use "AAA" batteries as "AA" ones with aluminium foil

If you do not have AA batteries, make use of AAA batteries instead.

Trick your device - be it a remote control, glowstick or Xbox 360 wireless controller - by padding the battery compartment with aluminium foil, which conducts electricity.

As long as you have enough foil to fill the gap between the batteries and contact points, your device should work fine.

Does it work: Yes, like a charm. I was initially afraid that my device - a Youth Olympic Games glowstick that I saved from 2010 - would explode, melt or suffer some horrible chemical reaction because the batteries required are of a different size.

Thankfully, that did not happen even after four minutes.

Now the next question: Can you pass off AA batteries as AAA ones?

3. Peeling garlic by shaking it between two bowls

Peeling garlic can be tiresome because it takes a long time and you have to pull the cloves apart and dig your nails into the edges to pull back the skin.

But some tutorials claim you can peel a head of garlic without getting your hands dirty. Better yet, you can do it in 10 seconds.

Just put the garlic between two metal bowls and shake it really hard.

According to a blog post by Mr John Rennie, a science programme, the garlic's dry, fibrous peel is relatively brittle, so all that agitation inside the shaking bowls helps to break the head open along the seams.

The clove itself is slightly slippery, which also helps it to slip out of the broken peel, he says on the blog.

Does it work: Yes. Within 10 hard shakes, the bulb of garlic had unravelled completely. Most of the cloves had shed their skin so I retrieved just the cloves and tossed the rest away.

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