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Index

Intro

Egg-Shell Funnel

Envelope Funnel

Hinge Vise

Nail Hanger

Screw on Screwdriver

Make Fire With Ice

Remove a Ring

Measure a Tree

Windmill

Pulling Staples

Quick Lawn Sprinkler

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Making a Fire with the Aid of Ice

The Boy Mechanic, vol. 1, page 338

Take a piece of very clear ice and melt it down into the hollow of your hands so as to form a large lens. The illustration shows how this is done. With the lens-shaped ice used in the same manner as a reading glass to direct the sun's rays on paper or shavings you can start a fire. - Contributed by Arthur E. Joerin.