As far as i know Paul, they usually grind a lyer off. the problem with acid etching is that it takes a layer off both sides,
you only want the dorsum etched . you could try liberally applying vasiline to the interior but this doesn't always work.
looks like grinding is your best shot. use eye protection . ferret
-----Original Message-----
From: paul james <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Thursday, January 13, 2000 8:46 PM
Subject: shell cleaning


|Hi there.  I'm a student of aquaculture in South Australia and I'm trying to
|clean some abalone shells (Haliotis laevigata) for decorative purposes.  I'm
|trying to find a solvent/acid wash treatment which will remove the colouring
|layer from the outer surface so the nacre (mother of pearl) is reached and
|both sides of the shell appear pearlescent.  Any suitable compounds,
|treatment duration times and concentrations would be much appreciated.
|Happy new year and all the best to everyone out there.  It's time for me to
|hit the water an enjoy the summer down under.  bye, P.J.
|______________________________________________________
|Get Your Private, Free Email at http://www.hotmail.com
|