There are numerous solutions that work, the most common being liver of sulfur (I don't remember what the modern name is). The easiest would be the stuff by Birchwood-Casey which should be available at any good gunsmith shop.
>________________________________ > From: gene heskett <ghesk...@wdtv.com> >To: LinuxCNC Users List <emc-users@lists.sourceforge.net> >Sent: Wednesday, February 22, 2012 2:30 PM >Subject: [Emc-users] Brass finish question? > >Greetings all; > >The new encoder wheel I made last night, by fiddling with the math that >determines the slot width until it has virtually no side wobble of the >1/16" mill at the inner apex of the slot, makes me ask a question about >what is the best way to chemically blacken brass, hopefully with the >intention of preventing reflections from the sides of the cut in the brass >that might artificially broaden the effective aperture of the slot. > >So, how does one chemically blacken brass? > >Ideally something that destroys any and all surface gloss, leaving a dead >flat microscopic felt like finish. > >I considered paint, but at those angles of reflectance, even black paint >might as well be glossy white. Plus I don't have any other than some ebony >wood stain. ;-) > >Cheers, Gene >-- >"There are four boxes to be used in defense of liberty: >soap, ballot, jury, and ammo. Please use in that order." >-Ed Howdershelt (Author) >My web page: <http://coyoteden.dyndns-free.com:85/gene> >The trouble with you >Is the trouble with me. >Got two good eyes >But we still don't see. > -- Robert Hunter, "Workingman's Dead" > >------------------------------------------------------------------------------ >Virtualization & Cloud Management Using Capacity Planning >Cloud computing makes use of virtualization - but cloud computing >also focuses on allowing computing to be delivered as a service. >http://www.accelacomm.com/jaw/sfnl/114/51521223/ >_______________________________________________ >Emc-users mailing list >Emc-users@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
