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Contamination or something else? (Alum.)

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  • popspipes
    replied
    The 4043 is known to have a sandy appearance at times. It looks like contamination or not enough cleaning, the band along the edge of the weld looks very narrow. possibly a cracked cup or leak in the hose, a gas lens may help also.

    mike sr

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  • Newton Brawn
    replied
    It looks as iron material, Chloridric acid may cleaning up

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  • RCGRT
    started a topic Contamination or something else? (Alum.)

    Contamination or something else? (Alum.)

    Does the gritty appearance of this bead mean contamination or something else? 3/32 Ceriated (sharp point), [email protected], 125A, 120Hz, 20%, #6 cup (no gas lens), Base material, 1/8 6061, tried 4043 and 5356 for filler.
    Attached Files
    Last edited by RCGRT; 05-13-2009, 07:57 PM. Reason: picture
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