It is frequently desired to have some handy place for storing valuables where there is but little chance of discovering them. Secret drawers in tables…

There are two kinds of electrical charge—positive and negative. An object that gains electrons has a negative charge. An object that loses electrons has a…

How to Make a Turbine Engine – In the following article is described a machine which anyone can make, and which will be very interesting,…

Backyard fun for kids – Animated Giraffe – The Giraffe is one of the rarest of animals, and very few are to be found in…

Take a card one-and-one-half inches wide, and fold around it a piece of unruled note paper, so that the card can easily slide up and…

Like many metals, aluminum is a very useful element.It is found in rock as bauxite, which is an aluminum ore containing oxygen.The oxygen has to…

Secure a tin can, or a pasteboard box, about 2 in. in diameter and 2 in. or more in height. Punch two holes A, Fig.…

Live Mouse Trap A piece of an old bicycle tire and a glass fruit jar are the only materials required for making this trap. Push…

Box-kites may be purchased ready-made in a number of sizes, but they are not cheap, and it will pay any boy to take the time necessary to make one...

Throughout history, armies and navies have sent messages across battlefields. Simple orders like “Advance” or “Retreat” could be given by bugle calls or cannon-fire. But…

DIY Hot Bed Plan – The growing season never arrives early enough for the enthusiastic boy gardener, so he provides himself with a hotbed, by…

Homemade Jar Opener – The accompanying sketch shows a handy device for turning up and unscrewing the covers on glass fruit jars. The loop is…