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

Thanks for the warning Wilfried!

Tony.


----- Original Message ----- 
From: "Wilfried Vermeiren" <vermeiren.wilfried@xxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Monday, January 31, 2005 7:29 AM
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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