[modeleng] Re: Sale of Deceased ME's workshop

Hi Tim of the Above, Have you anything coming up in the "milling" line? I often 
think I ought to have bought the machine at West Mersea which you had but that 
was after the event - I have the lathe of course and have found out its 
limitation when milling.My present project is a 5" Britannia, partly building 
from scratch though it has a boiler and rolling chassis so I have work to do. 
Best regards Jon
Tim Of The Above <the_viffer@xxxxxxxxxxx> wrote:  Some of the longer in the 
tooth may remember me. Some of you may also 
remember Dick Clements who died of cancer about 4 years ago.

His widow is planning to move to a smaller house and has asked me to dispose 
of his workshop for her. I don't want to see it go too cheaply. Dick didn't 
have nasty stuff so far as I know. I shall be selling it on ebay in lots 
over the next couple of weeks. Please look out for it and make some decent 
bids for some decent kit.

My ebay user name is plmokn321.

I shall also be selling some of my own stuff. I will identify which is 
Dick's although feel free to pay excessive prices for mine too.


Oh and displacement reactions. You can plate a less reactive metal onto a 
more reactive but not the other way round. So stick a bit of copper wire in 
some silver nitrate solution and it'll get silver plated. Put some copper 
wire in some iron sulphate solution and it won't.

You can find which is more reactive by looking up something called standard 
electrode potential or redox potential. You need a decent gap between the 
two to make the reaction work well.

I don't have the redox potential for Ni -> Ni2+ but I'd be a bit surprised 
if you could plate iron onto nickel or vice versa very well.

An old boy I knew used to swear by copper sulphate for marking out steel. 
Blue vitriol I think he called it. He'd degrease the steel pretty well and 
then paint it over with copper sulphate. The copper would plate out and he'd 
then mark out on the plating when it was dry. I reckon a big fat marker pen 
is a better way.

And horologists silver plate brass clock dials using a displacement 
reaction. The silver plate sticks really welll and can last years.

Cheers

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