May 2014
Intermediate to advanced
116 pages
5h 50m
English
Remaking History

Elektro-Thermit & Co. KG
Re-create the incendiary reaction that welded the world’s modern railways.
Written by William Gurstelle

WILLIAM GURSTELLE
is a contributing editor of MAKE. The new and expanded edition of his book Backyard Ballistics is available at all good bookstores.
Time Required: 1 Hour + 1 Week Cost: $10
Materials
» Steel balls, 2" diameter (2) such as trailer hitches
» Aluminum foil, heavy-duty
» Hydrogen peroxide, 3% solution (optional)
» Hydrochloric acid (optional) ...
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