drilling brass?

[irving2008]

I understood the snatching bit... it was the negative rake angle I needed clarification on... I dont do drills - when they get blunt I replace them, when they break I replace them. I have never sharpened a drill or taken a grinder to one.. but I found this description helpful. A picture paints a thousand words and eventually found one that mentions drill and rake angle in the same sentence... but I am still not clear what it should look like when I am done.. or how I am going to do this on a 2.5mm drill... I suppose the die grinder held in the vice and a small wheel as my big griinder is...too big!

[Robin Hewitt]

A picture paints a thousand words

Here is a 1.5" drill with a 90 degree rake angle

You could do it with a diamond hone easy peasy

Edit: From your picture that would be a 0 degree rake. I'd call it a 90 but they're probably right :heehee: