[minima] Re: Build update on my Minima + Construction notes on my website
- From: Sandeep Lohia <sandeeplohia12@xxxxxxxxx>
- To: minima@xxxxxxxxxxxxx
- Date: Sun, 9 Mar 2014 13:50:24 +0530
Iso-Propyl ( transparent ) those bottles available here are only
water with a bad smell ( duplicate )...
It's no Alcohol it's only & only water !!!
Original always comes deep-yellow.
dilute little Rosin in Iso-Propyl, if it mixes it's well & good otherwise not.
Nail polish remover from YL / XYL also works well.
U can also do a little rub with very fine Glass-Paper, Emry-paper.
before applying conformal coating-rosin. ( don't use steel-wool, it
can cut hand )
Recently from goldsmith market, I brought pink color powder,
I don't know what chemical formula it is, it might be just powdered
glass, kids use here on thread that of kites. or could be a mixture of
little Zinc Chloride.
It is for cleaning oxidized copper/bronze statues, & working very well with PCB.
there was also available some other color powders/gels as to clean
silver, gold but I didn't purchased that.
It is hard to solder on oxidized copper clad/foil if not filed. even
most skilled won't be able...
sometimes it takes no longer more then a hour on cleaned copper to
gather a fine coat of green or black rust, & soldering becomes
difficult thereafter...
on those copper foil or clad ( without pre-tinned -homebrew)
but if we can do a little conformal coating Rosin imminently after cleaning,
solder will stick to copper like magnet.
//www.freelists.org/post/minima/Copper-sheets,7
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Sir Thomas,
U can also rub clean with ink-pen rubber / eraser before Rosin-Coat,
if copper-clad already lost it's shine, & if already changed it's
color...
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