I posted here in DC about a year ago that my bathtub faucet washer seats, made of brass, would corrode and leak about once every month or two.
Regular as clockwork; every month or two, a leaking faucet.
I mention this here, because we're into 'planned obsolescence', and it would be so nice to have stainless steel faucet washers, but no, they gotta be cheap brass that causes problems.
I would have to shut off the water, dismantle the faucet handles, unscrew the faucet washer seats, which are threaded brass rings with recessed square inside holes for installing or removal.
Each $(%&^%# brass ring would be pocked with corrosion bumps, and have a slit worn through from inside to outside of the seat face where it mates with the rubber washer.
Once a leak starts dripping, the water just corrodes a neat little path through, leaving a tiny slit just like a hacksaw slot.
Then the chewed up brass washers would also have ruined the rubber washers, requiring new ones.
The plumbing industry had a real racket going, all at my expense.
So back then about a year ago, I got a brain storm.
I resanded the slot out (again, for the umpteenth time), and then I tried a new idea; I heated up the brass ring on a full size soldering iron, then puddled a ring of lead-free solder onto the brass facing.
Don't try it with a propane torch; the flame will oxidize the surface and the solder won't stick.
To avoid getting the solder on the threads of the brass rings and ruining them, I used micro-fine electrical soldering wire with its own built-in flux.
In fact, hit it with a propane torch first, to form an oxide coating that will prevent the solder bonding into the threads and ruining the brass washer.
Then sand the mating face to form a golden-colored pure brass finish to safely bond the solder only where you want it.
That gol-darn solder had an amazing tendency to create a high spot on one side and a low spot on the other every time, and almost drove me nuts.
It took me an hour, but I finally managed to compensate for this, get a good uniform layer, and sanded it down to a smooth finish, giving me two brass faucet washers each with a beautiful flat silvery-looking solder facing where it mates with the rubber washer.
Well, I am pleased to announce that ever since then, over one year now, both brass faucet washers do not leak to this day.
That solder plating works beautifully.