This #4 Bailey plane is a refugee from sometime before WWII. I'm not sure exactly when it was made, but it is one of a large number of cast-iron planes which were common before the age of power tools. Of... read more.
Watches are a good example of the value of good design and making trade-offs. The watch shown is an example of one which is quite robust because of the original design decisions, and one which had a life of... read more.
Yes, it is not strictly a tool, but it has become ubiquitous. "K-rail" - California's version of the New Jersey Type 50 concrete barrier is inescapable if you are driving in this state. There are a few reasons for this... read more.
Origins of Sharpening Stones: The Japanese have traditionally used sharpening stones which are lubricated with water to sharpen their metal tools. As they have been doing this for many hundreds of years, it is obvious that the first stones were... read more.
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