I did not see the jewel hole burnishing tools listed on the equipent list you posted in February. I did see the Levin lathe and thought that that was the tool that was available to you. You can certainly burnish a hole in a lathe by rotating the part as I mentioned and putting a small piece of drill rod in a pin vice. The only difference is the part is turning while the tool is stationary. If the special jewel hole burnishing tools are still made I am not aware of a source. They occasionally come up for sale on Ebay but in general are difficult to find.