Re: [CAD_CAM_EDM_DRO] Router Cutting Aluminum

Probably does but isn't as noticeable due to the thinness of the material.
Perhaps at 30,00 RPM the aluminum is being thrown so far away from the
cutter by centrefugal force it can't stick to the cutter.
Try using that tool in a pice of 3/4" thick stock without coolant and see if
it still stays clean.

Smoke


-----Original Message-----
From: Richard Spelling <richard@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Wednesday, November 15, 2000 1:53 PM
Subject: Re: [CAD_CAM_EDM_DRO] Router Cutting Aluminum

>The manufacturer claims you can cut aluminum with a RotoZip, which spins at
>30,000 rpm. "Aluminum siding".
>
>Why does this not melt the AL onto the RotoZip bit?
>
>Richard Spelling, http://www.spellingbusiness.com/boats
>From the muddy waters of Oklahoma
>
>----- Original Message -----
>From: "Jon Elson" <jmelson@...>
>To: <CAD_CAM_EDM_DRO@egroups.com>
>Sent: Wednesday, November 15, 2000 2:15 PM
>Subject: 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
>>
>>
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>
>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

discussion of shop built systems, for CAD, CAM, EDM, and DRO.

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