Fargo Enterprise in Vacaville, CA sells a black patina for brass.
Their Web site is Fargo-ent.com, I think and their catalog is available
on-line or can be downloaded as a PDF file.
Hal
-----Original Message-----
From: John Lowen [mailto:autochrome@worldnet.att.net]
Sent: Wednesday, May 13, 1998 8:20 AM
To: Bob_Maxey@mtn.3com.com
Cc: alt-photo-process-l@skyway.usask.ca; effrey.d.mathias@worldnet.att.net
Subject: Re: List Cleansing
Now that the list has been laundried - Can anyone of the chemists out
there tell me how to blacken brass to use as a waterhouse stop on a
Darlot lens?
thanks -
john