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From: "Jack Ford" <jackoford@theofficenet.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-769104@logan.com>
Subject: Re: [FlyRotary] Re: hand router milling
Date: Thu, 3 Mar 2005 18:19:40 -0800
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Kerosene was the cutting lubricant we used on large aluminum castings at US
Electrical Motors.

Wax was what we used for cutting aluminum, using wood cutting equipment,
which cuts at much higher speeds than are ideal for any metal. This was in
production, using radial arm saws with carbide tipped blades.

Jack Ford


----- Original Message ----- 
From: "George Lendich" <lendich@optusnet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, March 03, 2005 1:56 PM
Subject: [FlyRotary] Re: hand router milling


> Most machining on aluminium with a Lathe or Mill is cooled AND LUBRICATED
> with coolant. That stops that dragging bits of aluminium around and
galling
> of the material.
>
> Machine Coolant is vegetable oil and water.
>
> WD 40 is a light lubricant and would be good when there's no coolant
> delivery system and reservoir
> .
> I use Kerosene when tapping, as it has a light oily base and the cut looks
> as if it's done on a expensive CNC.
>
> So Kerosene may be a good and cheap alternative to the wax and WD40. I use
a
> spray bottle and small squeeze bottle.
> George  (down under)
>
> >   Kevin,
> >   I keep a block of bee's wax near the table saw to help with cutting
> >   aluminum.  Also, I purchased a special aluminum cutter for my die
> >   grinder from the local machine tool supplier (Dixietool.com).  It has
> >   many fewer, but deeper flutes than ones made for ferrous metals.  It
> >   works really great on aluminum.  My experience showed that it gives a
> >   much better finish than a carbide wood cutter does and it was easier
to
> >   control (you still need to pay attention).
> > """
> >
> > The attack and relief angles on cutters meant for wood vary dramatically
> from
> > those used on metal cutters.   A [wood-cutting] router bit will get you
> > through in a pinch, but a real milling cutter or burr will perform much
> > better.  I use WD40 for all my aluminum machining, works really well,
> although
> > a bit messy.  It's excellent for lubing taps when cutting aluminum.  I
buy
> it
> > by the gallon and dispense it with a plastic squirt bottle.  FWIW.
> >
> >   <Marv>
> >
> > >>  Homepage:  http://www.flyrotary.com/
> > >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
> >
>
>
>
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>