Originally Posted by
bulgie
unworthy1 , when you say a threading tool, do you mean a die? I'm talking about doing it with a single-point tool. Though there are carbide inserts that actually have more than one thread-form cut into them, I'd still classify those as "single point", as opposed to a die.
Mark B
I am not a machinist so I mis-use the nomenclature, but I was talking about a "single-point tool", not a die (adjustable or not).
I took a fork years ago to a local shop (it's long gone but used to be on Fillmore St. in SF) and they used their name brand die on my fork to extend threading an inch or so.
It was a disaster: my fork was trashed as was their die (which they blamed me for, but I had never touched it!)
After which I understood that LBS were very reluctant to take on this "commonplace job" ...and I came to have the highest regard for the lathe operators who could cut threads without any "drama"...may they RIP!