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2. Punch (tool) - Wikipedia

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

   Roll pin punches are designed with a small projection in the center of the pin tip to support the circumference of the roll pin. The tips of roll pin punches are not flat and should never be used on regular solid pins. If a roll pin punch is used on a solid pin, it will mar or mark the pin. If the end of a roll pin punch is damaged or deformed ...

3. Spring pin - Wikipedia

   en.wikipedia.org/wiki/Spring_pin

   A spring pin (also called tension pin or roll pin) is a mechanical fastener that secures the position of two or more parts of a machine relative to each other. Spring pins have a body diameter which is larger than the diameter of the hole they are intended for, and a chamfer on either one or both ends to facilitate starting the pin into the hole.

4. 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.

5. Automatic center punch - Wikipedia

   en.wikipedia.org/wiki/Automatic_center_punch

   The hammer has a hole through its center that the top of the punch sits in, and holds the top of the punch centered. The sliding block has a hole through it that, when reset, is misaligned with the hole through the hammer. When the body is pressed to the trip point, a taper in the body forces the block sideways until the hole in the block is ...

6. Vape in toothpaste and meth in crutches: See TSA's top 10 finds

   www.aol.com/vape-toothpaste-meth-crutches-see...

   4. Methamphetamine was found hidden inside crutches at Portsmouth International Airport in New Hampshire. ... How a loss to Northern Illinois set the table for Notre Dame's run to the CFP title g

7. No. 24 UCLA fights back from a 13-point deficit in the second ...

   www.aol.com/no-24-ucla-fights-back-223236185.html

   Tyler Bilodeau scored 17 points, Skyy Clark added 15 and No. 24 UCLA rallied from a 13-point deficit midway through the second half to beat Arizona 57-54 on Saturday. UCLA won its eighth straight ...