![]() The automatic center punch mechanism we will be covering in this article is from the Sweet patent. The most common patents that has been used for mass production of automatic center punches are the Sweet, Adell & Starrett, and Frey patents. The design for the Automatic Center Punch first started way back in the late 19th century. ALLY Tools and Parts has two types of automatic center punch sets.Ħ inch and 5 inch Automatic Center Punch Set and our 3 piece 6 inch Automatic Center Punch Set.Įver wondered how an Automatic Center Punch works? This article will explain to you the mechanism that create the center punch's ability to impact metal, wood, glass, and ceramic.
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