I am new to metal work and have recently purchased a Taig lathe. I am in process of making lots of little slivers of metal while figuring how the thing cuts etc.
Since the lathe was there and I needed a new shell holder for reloading 38/357 I decided doing something other than making sharf would be a good idea. I now have a beautiful brass shell holder that will not hold a shell 'cause I could not bring myself to grind a new end mill to undercut the slot for the rim.
Are such cutters commercially available?? or do I just grind it and smile? Can a cutter like I need be ground from drill rod then tempered??
Since the piece needs to be undercut, what is the suggested way to make the cutter - turn down a drill rod?? Would the flutes be cut in before grinding down - seems to me this is likely.
Since I am asking questions based on ignorance - I read some plans that called for "grinding" a surface after machining. He indicated it was for appearances. Does the author mean sand and polish?? or what if not that?
Feel free to explain the most common knowledge items.