Re: [CAD_CAM_EDM_DRO] Aluminum cutting,,,,,,,

And how do I go about doing that...without rebuilding the entire drive
head...and would the cost be worth it?

This machine is a 3HP vary-speed (speed adjusted thru a crannk) 9 x 49 mill.
A Chinese "knock off" of a Bridgeport.

Smoke

>Smoke wrote:
>
>> Max speed on my mill is only about 3200 RPM and I think I'll pass on

using

>> an 1/8" end mill when surface finishing a 5"+ wide piece or cutting 1"

plus

>> groove widths.
>
>Well, up to the max RPM on your spindle, the interesting thing is that a

large

>end mill doesn't actually allow higher feed rates, at least for finishing.
>I used to think that you needed really big end mills to remove a lot of
>metal quickly, but finally figured out that a small end mill, turning fast,

can

>remove metal FASTER, given that fairly small depth of cut and chip load
>will be used. Yes, when carving out big cavities or grooves, then the
>larger tools do better, but when finishing on the side of the cutter, the
>smaller tools can spin faster, therefore more teeth per minute, so you
>can feed faster. The limit, of course, is the length of cut. The small
>end mills will deflect or chatter on the longer cuts, while the larger

tools

>will stay rigid.
>
>Jon
>
>
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