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    Merode's Avatar
    Merode Posts: 1, Reputation: 1
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    #1

    Oct 17, 2009, 10:22 AM
    How to cut slot in 3mm aluminium?
    Hi,
    I am wanting to make up a frame, with 25mm T section x 3mm thick, aluminium, top and bottom, separated by 25mm SHS x 3mm crossmembers. The tops of the Ts have to face out. So I need to cut 3mm slots in the end of the SHS to accept the uprights of the T sections. Ideally these have square edges. What is the best/professional way of doing this?
    Thanks
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #2

    Oct 17, 2009, 11:17 AM
    If it's thin metal like your 3 mm thickness, a fine blade on a circular saw installed so it rotates the wrong way.

    This can also work except not for exceptionally thin material.

    Carbide tipped circular saw blade.
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