Hood
I am obsessed.
- Messages
- 16,936
- Location
- Carnoustie, Scotland
As has been said you will need a lot of leverage to tap 1" BSP, I do it in 316 every so often and use the big dwang which is about 1m total length and even then it is tough going. If possible to fit the part in the lathe I will then either cut the full thread in the lathe or occasionally start it and then finish with the tap.
If your tap is even the slightest bit dull you will need a couple of Gorillas to tap it
If your tap is even the slightest bit dull you will need a couple of Gorillas to tap it