On Monday, 24 July 2017 11:10:22 UTC+1, The Natural Philosopher wrote:
On 24/07/17 09:59, tabbypurr wrote:
On Monday, 24 July 2017 02:03:48 UTC+1, John Rumm wrote:
On 23/07/2017 20:53, jkn wrote:

You will have difficulty finding a 3mm straight fluted bit - and if you
do, it will be very weak so you would need many light passes to get to
depth.

A 3mm diameter cutter can not do that, no matter how many shallow passes you make. I know because I have one. The only things it's able to manage are drilling downward and sideways cutting where the material being cut is at the surface & thus close to the chuck. Anything else is a nonstarter.


NT

Dear tabby. PLEASE read what has been read. We are not talking about a
3mm dia cutter, but a 40mm or gretaer diameter cutter used on edge like
a precisioon saw with a 3mm kerf.

did you really miss
You will have difficulty finding a 3mm straight fluted bit
that I was responding to? seriously?
There, I've snipped the rest so even you can see it