• Does anyone have experience of using a rivet gun to replace a loose bottle boss on an alloy frame? I've done the M5 bolt trick a few times to tighten it up but this time it seems to not work. Otherwise is epoxy a worthwhile alternative option?

  • Does anyone have experience of using a rivet gun to replace a loose bottle boss on an alloy frame?

    Do you mean a rivnut/nutsert setting tool?

    If so I have done a few on both aluminium and steel frames.

    Use aluminium nutserts as they are easier to "pull up" compared to steel.

    Biggest problem may be getting the old out out without enlarging the hole too much, the drilling size is 7.1mm for an M5 nutsert.

  • Yes I do, thanks. I think now I am going to sell the frame (not because of the loose boss) so may just leave for any future owner to do as I do not have the rivnut tool

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