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Hi I am Santhosh from white field nook.Today I'll show you how to make air coolers at home. Step: 1Material: BottleToy fan9v batteryBattery clipDc motorSwitchCard board sheetWires Step: 2Take a cardboard sheet and waste bottle. Make a hole for the bottle and hold the bottle on the cardboard sheet. And take …
By: ushamanjunath27

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