Re: [CAD_CAM_EDM_DRO] Router Cutting Aluminum

Joe Vicars wrote:

> What are the disadvantages of using a wood router for cutting
> aluminum? I am building a spindle for a 3 axis mill. I was thinking
> about a 2HP Porter Cable VS router motor or an electric die grinder.
> 8000-12000 RPM
> A VS wood router or die grinder offers a lot of power in a small
> package and are very easy to mount.
> I have machined aluminum some with a router mounted on a lathe, but
> it was a pretty flimsy setup.
> Anyone have experience with this?
> The only problem I can think of is the Aluminum dust floating around
> and getting breathed in.

And, that won't be good for the motor. But, what about the spindle
bearings? I suspect the side forces will be MUCH greater cuttting
aluminum, and may destroy the bearings very quickly. 8000 RPM
minimum would require you to use only very small cutting tools, which
might wear out very quickly. If you do this, you will need to have a very
high feed rate, something like several hundred inches/minute.
If you can't deliver the feed rate, you will melt aluminum, which will
destroy the tool bit immediately.

Jon