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Text File  |  1993-01-21  |  1.3 KB  |  32 lines
  1. Newsgroups: sci.electronics
  2. Path: sparky!uunet!paladin.american.edu!howland.reston.ans.net!spool.mu.edu!uwm.edu!linac!att!mcdchg!mcdphx!schuch
  3. From: schuch@phx.mcd.mot.com (John Schuch)
  4. Subject: Re: Etchant types
  5. Message-ID: <1993Jan21.143749.26493@phx.mcd.mot.com>
  6. Sender: news@phx.mcd.mot.com
  7. Nntp-Posting-Host: bopper2.phx.mcd.mot.com
  8. Organization: Motorola Computer Group, Tempe, Az.
  9. References: <C0vrzx.77p@acsu.buffalo.edu> <1993Jan19.165044.24068@feline.uucp>
  10. Date: Thu, 21 Jan 1993 14:37:49 GMT
  11. Lines: 19
  12.  
  13. In article <1993Jan19.165044.24068@feline.uucp> gray@feline.uucp (Kelly Gray) writes:
  14. >In article <C0vrzx.77p@acsu.buffalo.edu> v064mb9k@ubvmsb.cc.buffalo.edu (NEIL GANDLER) writes:
  15. >>
  16. >>   What are the advantages of Ferric Chloride vs. Ammonium Persulphate.
  17.  
  18. > You might want to re-think using the immersion heater on the
  19. >persulphate etchant. If it's metal, there's a fair chance that the
  20. >etchant will attack the heater element too!
  21. > 
  22.  
  23. Use a glass aquarium style heater.
  24.  
  25. John
  26.  
  27. -- 
  28. +--------------------------------------------------------------------------+
  29. | John R. Schuch  -  Motorola Computer Group  -  Manufacturing Engineering |
  30. | N7XVS - schuch@phx.mcd.mot.com - (602) 438-3008 - CompuServe: 70733.3330 |
  31. +--------------------------------------------------------------------------+
  32.