• Just got into oxalic acid. £10 for 2kg off ebay. Amazing stuff, though haven't done a whole frame yet...

  • Like magic, although doing a whole frame would take some doing: it needs to "soak" overnight, results aren't instant.

  • Aye. It's meant to give alu a hard time if left too long but I've just cleaned up some 50s record bits (seatpost and headset) and it got surface rust off within 12 hours.

    A bit of fettling with concentration/timings will produce better results, I guess.

    I'm just gutted I didn't hear about it sooner. It would have saved me loads of time with silver foil.

    Btw, concentration is something like 5g per litre. A kg is £6 or so. Shit is cheap, yo.

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