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Cutting aluminium sheet/plate

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Martay
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Joined: 20 May 2009
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PostPosted: 16:03 - 16 Jun 2011    Post subject: Cutting aluminium sheet/plate Reply with quote
Hi,

got a load of aluminium sheet, its about 4-5mm thick. Trying to cut it and struggling. Using an angle grinder with a 2mm cutting disk but it isnt behaving. Best way of describing it, the metal get fucking hot, but doesnt cut properly. Its like im trying to cut fucking diamond with a breadknife!
Any better suggestion on how to cut the sheet properly? Its too think for snips, i think its too thick for a jigsaw?
Ta
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Martay
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PostPosted: 16:40 - 16 Jun 2011    Post subject: Reply with quote
Scrap this, jiggy works like a boss Smile
Sorry
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andym
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Joined: 16 Nov 2010
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PostPosted: 17:22 - 16 Jun 2011    Post subject: Reply with quote
silly question... are you using a metal cutter on the angle grinder? If you're using a stone cutter it will just rub the metal.... you would be just as well using a bit of sand paper.

Either that or get something like a dremmel or jigsaw with metal cutting blade
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Pete.
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Joined: 22 Aug 2006
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PostPosted: 18:05 - 16 Jun 2011    Post subject: Reply with quote
Normal circular saw would work, but you gotta wear gloves, eye protection and ear defenders (for the whole street) Very Happy

Otherwise nibbler or jig-saw as you have done.
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Martay
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Joined: 20 May 2009
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PostPosted: 18:21 - 16 Jun 2011    Post subject: Reply with quote
Pete. wrote:
ear defenders (for the whole street) Very Happy.


It did seem pretty damn loud, my ears were ringing afterwards. Is that common with aluminium, never had a problem cutting steel before?

The disk was a commonal angle grinder disk that said Metal Cutting on it. I guess it was made of ceramic or some form of stone? Looked kinda like this:
https://www.bisqueuk.com/acatalog/AngleGrindingDisc.png

Cheers Smile
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stinkwheel
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Joined: 12 Jul 2004
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PostPosted: 19:43 - 16 Jun 2011    Post subject: Reply with quote
A hacksaw works pretty effectively too.

Except that one time I got a sheet of what turned out to be dural out of a scrap centrifuge. That was seriously hard work but made a lovely fork brace/mudguard mounting.
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Raffles
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Joined: 14 Apr 2009
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PostPosted: 20:44 - 16 Jun 2011    Post subject: Reply with quote
Martay wrote:
The disk was a commonal angle grinder disk that said Metal Cutting on it.

A metal cutting disc will clog if used on aluminium or any other non-ferrous metal. Similarly a fine toothed metal jigsaw blade will clog and overheat when used on aluminium. I find using a coarse wood cutting blade or a plastic cutting blade to be the most effective method.
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