Harvey, see above, from BaronJ, that is the ultimate best answer for your problem. If making the toolholder from scratch is too difficult you can get one on mail order, for the actual tool bit, an old center drill with a blunt or broken end makes the perfect cutter, various sizes available. Can also use up old ends of broken, worn out milling cutters as turning tool.
This tool is the most simple to grind, one flat face on the end at around 12 deg. is all you need.
When you order the tool holder, you have the option to order with the tool grinding guide, makes life simple, get the perfect angle every time. The bonus is you also have a great general purpose tool holder for all normal turning, with very simple regrinding,