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Making a leatherworking half moon tool

Upcycling a high‑carbon steel circular saw blade into a classic leatherworking tool. Timeline / operations: 0:30 Rough shape ...

Cities with Strong Companies and Cities Where Companies Continue to Grow—The Circulation of People and Work That Has Supported Bologna's Machinery Industry

While researching the machinery industry in Bologna, Italy, I encountered a surprising fact. It is said that this city had a ...

Example: Image Circle Viewer and a Warning Regarding Converting Old Lenses into Magnifying Glasses

In large-format view cameras, there is a fundamental technique called 'movements' (tilt/shift), and for this, numerical data ...