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2. PCS Stamps & Coins - Wikipedia

   en.wikipedia.org/wiki/PCS_Stamps_&_Coins

   PCS Stamps & Coins, formerly known as the Postal Commemorative Society, offers a variety of collectible stamps, coins, and other memorabilia. In short, it's the world's largest company dedicated to the collection of stamps, coins, and other related items. [ 1 ]

3. Punchcutting - Wikipedia

   en.wikipedia.org/wiki/Punchcutting

   Punchcutting is a craft used in traditional typography to cut letter punches in steel as the first stage of making metal type. [1] Steel punches in the shape of the letter would be used to stamp matrices into copper, which were locked into a mould shape to cast type. Cutting punches and casting type was the first step of traditional typesetting ...

4. Progressive stamping - Wikipedia

   en.wikipedia.org/wiki/Progressive_stamping

   Progressive Die is a metalworking method that can encompass punching, coining, bending and several other ways of modifying metal raw material, combined with an automatic feeding system. The feeding system pushes a strip of metal (as it unrolls from a coil) through all of the stations of a progressive stamping die. [1]

5. Punch (tool) - Wikipedia

   en.wikipedia.org/wiki/Punch_(tool)

   A center punch is used to mark the center of a point. It is usually used to mark the center of a hole when drilling holes. A drill has the tendency to "wander" if it does not start in a recess. A center punch forms a large enough dimple to "guide" the tip of the drill. The tip of a center punch has an angle between 60 and 90 degrees. [1]

6. Stamping (metalworking) - Wikipedia

   en.wikipedia.org/wiki/Stamping_(metalworking)

   Stamping (also known as pressing) is the process of placing flat sheet metal in either blank or coil form into a stamping press where a tool and die surface forms the metal into a net shape. Stamping includes a variety of sheet-metal forming manufacturing processes, such as punching using a machine press or stamping press , blanking, embossing ...

7. Punching - Wikipedia

   en.wikipedia.org/wiki/Punching

   The punch force required to punch a piece of sheet metal can be estimated from the following equation: [4] F = 0.7 t L ( U T S ) {\displaystyle F=0.7tL(UTS)} Where t is the sheet metal thickness, L is the total length sheared (perimeter of the shape), and UTS is the ultimate tensile strength of the material.