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How do I make threads in metal?

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Set the tapered bottom end of the tap into the top of the drilled hole. Keep the tap perpendicular to the metal and keep the handles of the wrench parallel to the metal. Slowly turn the wrench clockwise, pushing down with firm pressure. The tap will begin to cut threads into the inside of the hole. read more

Create secure metal joints with screws or bolts. Screwing and bolting also allow you to affix other materials to metal, such as wood. Creating a threaded hole for driving a fastener into requires drilling a hole in the metal. After drilling a hole, use a tap from a tap and die set to carve the threads. read more

To make a threaded hole that fits a particular screw size, you need to start with a hole that is slightly smaller: just a bit bigger than the size of the inner core of the screw (as if the threads were all removed). read more

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