Originally posted by John_Kunkel
I've been asking that for years...common consensus is 118 degrees which is considered the standard.
Hi John, over 11 years since we had a chat...
I have to work out properly what the drill is. As stated, it's an unused one as far as I know, there are no marks at all on the fluting and it otherwise looks like it's been lying around without any use at all.
Trying to calculate the angle from a photo I find it's very hard to do this. I got 132° using this method, but it is fraught with variables.
