Interesting rusted fastener removal technique

[Russ Gregg]

I have never tried it but rust by nature is porous and capillary action doesn't require much clearance. Mind you the level of rust between an old road car wheel and an original bolt on a 75 year old piece of armour are several orders of magnitude apart. I'd be interested to hear how it works if anyone tries it, I've got too much newer stuff that needs fixing at the moment.