Tapping threads straight can sometimes be a challenge. A lathe, drill press, or a lot of practice help the process — or you could use a tool like Big Gator Tools’ V-Tap Guide. A series of graduated holes in the V-Tap Guide keep the tap aligned perpendicular to the surface.
Big Gator Tools makes the V-Tap Guide from nickel alloyed steel, heat treats it, grinds the bottom flat, and chrome plates it. They also cut a V-groove into the bottom, which both gives the tool its name and allows you tap perpendicular holes on corners and round stock in addition to flat surfaces.
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