Re: Tabel to spindle clearance of small CNC Mill

Thanks for the response Jon, my interest is not miniture stuff like
watches. A concrete use will be parts for homebuilt aircraft. I would
like to make a model gas turbine to the Thomas Kamp plans. I do have
a friend who keeps trying to get me to make the parts he breaks on
his model helicopters, but you can buy them for less than my time :)

I was tending towards installing the head with 100mm between the
spindle nose and the table with the knee fully raised.

Regards,
Mark

I am thinking of about 100mm between the with the

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
>
>
> rotarysmp wrote:
>
> >I have a Deckel G1L frame which will be getting an MT3 milling
head
> >grafted onto it. It will be converted to CNC, and used for hobby
> >work, mostly one off or short runs, in Al and Steel.
> >
> >The Z travel is 300mm. No quill travel.
> >
> >Table is 600x250mm with X travel = 300mm and Y =150mm
> >
> >What would you recommend for a minimum spindle nose to table
distance?
> >
> >
> it depends on what you plan to do with the machine! If you are
going to
> machine pocket watch parts, you don't need much space there. If you
> are going to bore engine blocks, you probably don't have enough.
> But, you should be able to get a decent size Jacob's chuck on an MT3
> arbor, put a 1/2" jobber's length drill bit in it, and still have a
> couple of
> inches below the drill tip. That is generally going to be your
longest
> tool. One other long tool is a boring head with a relatively long
boring
> bar in it.
>
> Jon