I have been using the tool at the link below for chamfering. I thought when I purchased it that it would also be good for center drilling. I only have 10 tool slots in my CNC so combining center drill, chamfering tool, and even side milling would be great. Unfortunately I have been breaking the tip off these tools when trying to use them for center drilling in 6061. In hindsight I think I was probably feeding the tool down too fast given the fine tip on it. Sorry, I don't remember the exact plunge rate, it was a while ago. But I need to buy a new one for a job so looking into this again now.

The tool says it is center cutting, but it also says does not have drill point geometry. So, are these tools meant for plunging or not? If so, what sort of plunge rate would you use for 6061 and low carbon steels?

https://www.garrtool.com/product-details/?EDP=58214