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YouTube on MSN31m
How to Make a Electric Air Pump at Home
In this step-by-step tutorial, learn how to make an electric air pump at home using readily available materials. This DIY ...
YouTube on MSN48m
How to Make 3.7 to 220v Mini Inverter
Learn how to transform a 3.7V battery to power a 220V device with this step-by-step mini inverter tutorial. Discover the ...