rivnuts everywhere: https://gypsybytrade.wordpress.com/2013/04/26/rivet-nutting/
I always thought rivnuts would be a bad idea on steel. Seems weaker than brazing. Rivnuts on carbon where you can't braze/weld. Pretty sure you can do bottle cage bosses on a shitty map gas setup from B&Q too.
@tallsam started
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rivnuts everywhere: https://gypsybytrade.wordpress.com/2013/04/26/rivet-nutting/