The blame should be put squarely on the shoulders of tophatter.com. They know the quality of what is being sold and choose to look the other way for the sake of making commission and sales fees on these imitation goods. In my estimation and also the interpretation of the law this is outright FRAUD.
Inverse operations are opposite operations that undo each other. Addition and subtraction are inverse operations. Multiplication and division are inverse operations.
1 Tapping operations create chips. 2  Mask or cover any parts of your workpiece or surroundings that would be damaged by chips, or plan to clean them off when you are done. 3  Small taps are extremely easy to snap. 4  It takes about 4 pounds of force to break a 6-32 tap, so be very careful using small taps. tap cuts threads on the inside of a hole, to accept a machine screw or bolt. Taps can also be used to restore an internal thread that has been damaged or to cut a new, larger thread in the case of severe damage or stripping. Ad.