[modeleng] Re: Alumin(i)um was RE: Re: O/T Disposable Propane bottles
- From: peter.chadwick@xxxxxxxxxxx
- To: modeleng@xxxxxxxxxxxxx
- Date: Wed, 2 Mar 2005 09:21:50 +0000
A good strong solution of caustic sode is excellent for dipping aluminium
sheet items, such as those used in electronics. Commercially, it used to be
followed by a dip in dilute (25%) nitroc acid, and was known as 'caunit
dip'. However, swabbing with vinegar removes the black deposit that the
caustic dip leaves, and the result looks nice on a chassis, and takes paint
well. One does it outdoors, of course.......
Caustic soda is still used for drain cleaning, (it dissolves the fats) and
you can still get it at good hardware stores in the UK.
Peter Chadwick
Swindon
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