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Tungsten Putty - 1 ouncea
Pinewood Derby Weight
What is Tungsten?
The word "tungsten" literally means "a substance of high density", and is derived from the Swedish language, "tung", meaning "heavy," and "sten", meaning "stone." The name is appropriate as tungsten is a metal with one of the highest densities. In fact, tungsten is 1.7 times more dense than lead. Only gold, platinum, and a few other rare and expensive metals have a similar density.
Applications of Tungsten
Tungsten is completely non-toxic and environmentally friendly so it is gaining increased use in weighting applications where lead is not appropriate. For example lead has been banned in many streams, so tungsten is often substituted for lead weight on fishing flies. The high density coupled with the non-toxic nature makes tungsten an ideal metal for this application.
For similar reasons tungsten is a superior product for weighting pinewood derby cars. Tungsten is 3.2 times the density of the zinc ("Lead Free") weighting material often used on pinewood derby cars, thus it enables tremendous flexibility in the design of the car. Coincidentally, tungsten has been used by NASCAR for the metal roll cage and as frame ballast to lower the center of gravity of the race car.
What is Tungsten Putty?
Tungsten Putty is a non-hardening, moldable material made from tungsten powder and a polymer binder. Under normal conditions, it will not harden. The minimum density is 10 g/cm3.
How to Use this Product
Tungsten Putty can be easily used for fine-tuning the weight of pinewood derby cars. Simply pinch off a piece of the putty, knead it until it is pliable, and press the putty into a cavity or hole in the car.
Although tungsten putty is made from non-toxic ingredients, it is NOT a toy for children to play with. Always wash your hands after use, and keep it away from food and your mouth.
a1 ounce nominal weight - actual weight ranges from 0.9 to 1.0 ounces.