This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
White spots on furniture can be removed by rubbing the wood with ammonia.
Georgia pine should be filled with white shellac.
Indistinct but not entirely worn-off dates on coins may be read by heating slightly.
Young sleepwalkers may be cured if watched and given a good switching until they are wide awake.
The best paint for paper roofing is asphaltum varnish.
To print on celluloid, use a good gloss ink and old rollers.
Linoleum may be renewed by applying floor wax in liquid form.
Oilcans should be marked to indicate the kind of oil in them.
Old discarded blueprints can be made white and used for sketching by dipping them in a solution of soda and water, in the proportions of 4 oz. of soda to each gallon of water.
An ideal cleaner for kid gloves is carbon tetrachloride.
Tincture-of-iodine stains may be removed from clothing or the skin by using strong ammonia water.
Paint spots on window glass can be readily removed with a penny.
In a case of emergency, lemon juice may be used as soldering flux.
A filler for birch, red gum and beech can be made of 1 lb. of bleached shellac to each gallon of water.
An aniline color soluble in alcohol, by adding a little carbolic acid, will hold fast on celluloid.
An antenna should be made of wire larger than No. 14 gauge.
To sharpen a carving knife draw the edge through and against the open edge of a pair of shears.
Bread crumbs thoroughly rubbed over a pencil drawing will remove most of the dirt and without disturbing the pencil lines.
Do not expect accurate work unless you have accurate tools.
A piece of work should never be fingered while filing it in a lathe.
Never rock a file - push it straight on filing work.
Never stand in a direct line of a swiftly revolving object, such as an emery wheel.