[ARC5] WHINK and crystals.

[Richard Knoppow]

----- Original Message ----- 
From: "Roy Morgan" <k1lky at earthlink.net>
To: "Ken Gordon" <kgordon2006 at frontier.com>
Cc: "ARC5" <arc5 at mailman.qth.net>
Sent: Wednesday, June 26, 2013 7:56 PM
Subject: Re: [ARC5] WHINK and crystals.



On Jun 26, 2013, at 5:39 PM, Kenneth G. Gordon 
<kgordon2006 at frontier.com> wrote:

> ...
> I took that one apart, carefully, and dropped the crystal 
> blank into a cup…. of WHINK

Ken,

I llooked at the Whink website and found that they make MANY 
products.  Which one did you use?

What is "HF" mentioned in another post?

Roy

     I rather think hydrofluoric acid.  Hydrofluoric acid is 
will dissolve glass. In fact, it must be stored in something 
like wax or certain plastics which are immune to it. 
Hydrofluoric acid must also be handled with great care 
because in concentrated form it causes severe burns that 
heal very slowly. Concentrated acid will burn right down to 
the bone. The glass etching solutions sold for hobby etching 
are very dilute and are not dangerous although they still 
deserve careful handling.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com