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A spring loaded center punch is used to make an indentation in metal prior to drilling a hole. The indentation helps hold the drill bit in position when startin the hole.
The center of the hole is marked, then the puch tip is set on the mark. Press down on the body of the punch until the spring mechanism releases.
The force of the punch can be adjusted by turning the top of the body. Softer metals such as aluminum need less force to make a satisfactory mark. Hard metal may need more that one stroke to make a deep enough mark.
This type of punch is also known as an automatic center punch.
This is a handy tool to have around. It can also be used to break automobile side window safety glass in an emergency. The sharp point will cause tempered safety glass to shatter.
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ProfessorTo use a spring-loaded center punch, place the tip on the desired location and press down firmly and steadily. The punch will automatically release its spring-loaded mechanism to create an indentation or mark on the surface. This tool is commonly used to mark drilling points on metal or wood.
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