I broke up in one shot. I thought that it was some mistake, but the following also broke up in about 20 pieces of processing. I will not buy it again
Tap processing of parts
On 2011-03-08 19:59:19
There are variations in the diameter of the tap (the diameter of the part tapering down from the shank). There was a thing of 3.34 mm in the tap which I bought. Since the lower diameter is 3.3 mm, there is a possibility of breaking at once if putting it deeply. It can be relieved if you make it at least between 3.0 and 3.1 mm · · ·.