Cutting fluid
I have been using a product called Tap Magic xtra thick, I urge you to do a search on line on this product. This product is made for very hard to machine steels and Inconel. This product is thick enough to stay on a tenon being turned at 300 RPM's when I cut with HSS tool. It also stays on the tenon when you are threading it. The lubricity factor of this product is fantastic. As a result, the smoke is less than half of what I had been used to when using it for turning purposes. I pre-bore my chamber prior to reaming. This lube is so slick that I can not feel any cutting going on until I touch the shoulder to be cut. I have to watch my gauge to know that any cutting is going on!
Send me a pm if you want more info, I bought more than I need, $8 per bottle, Retail is around $13.50 per bottle!