Search:

Well, I didn't know that sometimes a larger hole is needed... 5/64" is 1,98mm, ( 2mm) , can be done, in fact I have every drill from 1 to 3 mm, in steps of 0.1mm( 20 sizes , in equal increments) , so...

https://www.youtube.com/watch?v=t010jQ8veCM

1/4" nickel silver rod.
Two profiled tools are used to make the large domed nickel silver collars. Smaller profiled toos have a radius of 0.4mm ( that...