[modeleng] Re: Cutting aluminium DANGER !!!!

And ALL workshop must be scrupulously clean with a capital C  L E A N,
Aluminium fillings, shavings and chipping mixed with iron/steel swarf, is an
explosive combination.   Dennis Dalla-Vicenza put a posting up a year or two
back, the photo of the poor victim,  Awful.
Bob Logan, who has a broom in the workshop, next to bin.

----- Original Message ----- 
From: "Wilfried Vermeiren" <vermeiren.wilfried@xxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Monday, January 31, 2005 8:29 PM
Subject: [modeleng] Re: Cutting aluminium DANGER !!!!


> Beware it can be done but is DANGEROUS, take my word for it !!!!
> A normal wood saw is UNSUITABLE for this as the teeth don't have the
correct
> form and will grab the aluminium and draw it into the saw which can lead
to
> severe injuries. It should certainly not be attempted on a bench saw where
> the work piece has no back up support. I am not making this up I have seen
> the results, for both man and machine, walking into the shop where I work.
> Aluminium can be sawn with tip toothed saws at high speeds but the teeth
> have a special form. They have a negative top rake and have alternative a
> teeth which is full with and one which is cornered off. This in order to
> make the cuttings produced narrower as the cut so it will not jam in the
> groove. As for lubrication paraffin is good but smelly and messy there are
> sticks a bit like candle wax, which also works, specially for this.
> The same special saw can be used for brass and the like as well.
> Light steel profiles can bee done the same way but again with a special
> adapted saw.
> Regards
> Wilfried Vermeiren
> http://users.skynet.be/modelbouw.wilfried
>
>
>
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