But how did he make the hole within which the drill bit sits in? Answer… a cordless 20v Flex Power Dewalt Power Drill. Don’t always believe everything you see on the internet.
There are two lessons 1...globe valve has a rubber seal. No need to press it hard to stop water. A mild force is enough to stop water 2...The basic principle of Siphon. How does it work. Note...I am a marine engineer