Thanks John for your tips. What is a Burgess vibrator?
A Burgess vibrator is something I cobbled together from a
dust-buster motor, 4 springs a couple of pieces of wood, a kodak
slide box and some ball-bearings in mixed sizes. The speed is
controlled by a battery charger and domestic light dimmer. If
you really want to make one, I can send you the details. You
drop the chains in the slide box after pickling, together with
the miscellany of steel balls, set the thing vibrating and the
madly jiggling balls polish the chains noisily. An hour and your
chains are polished. Of course you can buy one - but as you are
aware, I make most things I can.
I also did try heating in new Sparex, and it did not work.
Try dipping in nitric acid - nasty, but it will remove most
things, but DONT leave for more than a few seconds. You could
also try electro de-plating, using cyanide, (amounts to the same
thing, of course) but I don’t suppose you like that idea either.
Also, can you tell me what happened to the silver I left in
the old pickle for too long, and what I can do for that? Ruth
I can only suggest that the grey appearance is deep fire stain.
THe final suggestion is to get the chains electro plated - it
wouldn’t need to be a heavy plate. Some firms will do a bright
plate fairly cheaply.
Pickle is so cheap that you can afford to throw it away at the
end of each workshop session. The acid pool adjuster sold for
lowering the pH of swimming pools is exactly the same stuff as
sparex, sodium bisulphate, but a hell of a lot cheaper.
And that is about all I can offer. Let me know how you get on.
/ / John Burgess,
/ //\ @John_Burgess2
/ / \ \
/ (___) \