I have brought some 1/4" ME taps, the plug tap comes with a point, the 3/8 "has no point.
I phoned the supplier that I needed to thread blind holes with the 1/4 "plug tap, they explained the reason of the point on the end and why a lager tap has a small hole on the cutting end.
To get over the problem I can grind the point off but I still will not be able to tap to the bottom of the blind hole.
As I don't want to ruin the plug tap but with other small taps I have ground down to the start of the thread so have a flat bottom, as these old taps were from the working days they didn't cost me anything.
The ME plug tap and second tap has about 3/16" before the start of the thread.
I thought about tapping 1/4" steel and then insert the tap and just before the thread starts at the other side, grind it flat using the 1/4" steel as the stop.
Any suggestions if this is incorrect way of doing this.
Thanks Bob.