I have several threading dies that I inherited that are not split but shoul d be. The 'new old stock' un-split die I've just started using is a 1/4" BS F but I do have other sizes. I t works OK, but being able to adjust it coul d be useful.
They are 'normal' HSS round dies with dimples on the circumference where th e die-holder adjusting screws fit and vee slots where they should have been split for the spreading screw.
I have an instruction from the manufacturer stating that the die should be split before use. No instructions were given on how to actually split the d ie and I'm reluctant to give it a whack with a cold chisel or similar. Othe r split dies I own have obviously been split after manufacture.
Although I could split the die with a Dremel or similar, I would like to kn ow how it was done properly.
Does anybody know how this was done?
Thanks in advance.
John H