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Re: [ATM] Fine Grind already Blanchard ground mirror blank back?

To: Tom Wicker <atm@atmlist.net>
Subject: Re: [ATM] Fine Grind already Blanchard ground mirror blank back?
From: Richard <cnc@cncservo.co.uk>
Date: Fri, 9 Mar 2007 11:42:07 +0000
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Reply-to: Richard <cnc@cncservo.co.uk>
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Hi Tom,

Friday, March 9, 2007, 2:38:30 AM, you wrote:

TW> Please be cautious of advising anyone to use
TW> hydrofluoric (HF) acid.  It is extremely nasty.

The vapours are also extremely toxic. The allowed airborne
concentration of HF is (or was when I was in the industry) three times
lower than Hydrogen Cyanide.

-- 

Best regards,
  Richard in the UK

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References:
- Re: [ATM] Fine Grind already Blanchard ground mirror blank back?
  - From: Mike Lockwood <melockwo@uiuc.edu>
- Re: [ATM] Fine Grind already Blanchard ground mirror blank back?
  - From: Tom Wicker <tomofreno2000@yahoo.com>

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