Take a look at Linegrinder --haven't used it in a while, don't know if the current capability allows tool changes, but it does support different cutter diameters.
Craig
--- In Homebrew_PCBs@yahoogroups.com, Slavko Kocjancic <eslavko@...> wrote:
>
> Hello...
>
> I looking for isolation mill software. There are few available to do
> basic isolation mill or vonroi. But I look for software that can use
> different mill cutters (different width).
> For example I have 4, 16 and 40 mil cutters.
>
> I wan't to mill isolation trace with biggest mill possible. When there
> are not enought space then use smaller mill. So if there are 10 mil
> space I should cut 3 pass overlaped with 4 mil cutter but 20 mil space
> with just two pass of 14 mil instead at least 5 pass with 4 mil.
>
> I think this is must if I want large cooper area to be removed.
>
> Does somebody know for that one? (I know LPKF mills use that technique)
>