- Joined
- Apr 28, 2016
- Messages
- 86
Does anyone know what the Nplus coating is? https://www.harveyperformance.com/in-the-loupe/category/helical-solutions/
Based on the claimed physical properties and the color I would guess it is some variation on nACRo. Which is a bit of a surprise as I thought that CVD coatings containing Aluminum left the Al chemically reactive so that it could form oxides and thus would be a poor choice for machining Al. What I can say as I've been using the https://www.helicaltool.com/products/tool-type/aluminum-non-ferrous/5-flute roughers and finishers and they are, in my limited experience, the best tools I've ever used. The roughers have the same end grind as the finishers and leave what I would generally consider an acceptable final side finish. The only real downside is you have to be careful with the RDOC because of the shallow gullets... and it seems that Al will weld if you plug them up.
Based on the claimed physical properties and the color I would guess it is some variation on nACRo. Which is a bit of a surprise as I thought that CVD coatings containing Aluminum left the Al chemically reactive so that it could form oxides and thus would be a poor choice for machining Al. What I can say as I've been using the https://www.helicaltool.com/products/tool-type/aluminum-non-ferrous/5-flute roughers and finishers and they are, in my limited experience, the best tools I've ever used. The roughers have the same end grind as the finishers and leave what I would generally consider an acceptable final side finish. The only real downside is you have to be careful with the RDOC because of the shallow gullets... and it seems that Al will weld if you plug them up.