TApS- making a thread
Taps are used to cut threads into a hole so that a bolt can be used
to fasten objects together.
First you must select a bolt size, then look up the right sized hole for that bolt size.
After drilling the hole, insert the tap into the hole whit a tap wrench and turn it counter-clockwise.
Reverse direction every few turns to break off the chips.
Be sure to keep the tap straight and perpendicular to the surface!
And using lubricant will make it a'lot easier to cut it and the tools will last longer.