Re: feeds and speeds.

FWIW, on a scale of machinability published by the NSMA (National
Screw Machining Association?) 6061-T6 is rated "C" on a scale of A to
E, with A being the easiest to machine. Milling 6061 is not too bad,
turning is a royal nightmare.

Doug

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <jmelson@a...> wrote:

> 6061-T6 is eminently machinable, as long as you don't get it hot,
which will
> soften it. 6061-T0 is a horror, and that's what happens if it gets
hot.
> Other aluminum alloys in the T0 state are also difficult.
> You can mill 6061-T6 without coolant, as long as the feedrate is
such that
> the work doesn't get hot. A quick cut on a large, solid piece is
no big problem.
> A quick cut on a thin piece can be totally different, as the heat
cannot be
> absorbed by bulk.
>
> Jon