Taps

[Arbalest]

I was just as concerned about tap alignment Dave although I must admit I expected each tap to remove a similar amount of material and therefore require about the same amount of effort, which was'nt the case. I should add that I use Tamaxol cutting compound when thread cutting in steel. I also have M6 so I'll give those a try when I get a minute. I must admit that the quality of the resultant thread seems very good in terms of finish (smoothness) but I can't prove this.