Re: ATM Method of Blackening Brass

[Dick Strever <Strever@concentric.net>]

Del Stanton wrote:
> 
> >From memory - from the original ATM books (sci amer- three volumes):
> 
> Dip the part in olive oil,
> 
> Heat it in a the flame of an alcohol lamp.
> 
> Do it several times to get the desired tone.
> 
> You might call the local plating and black oxide (applied to iron
> or steel parts, similar to the blueing used by gunsmiths) to see
> if there is a commercial black oxide or other finish for brass.
> 
> Del Stanton   (My sig follow the quoted text.)
> 
> At 04:30 PM 2/4/97 -0800, you wrote:
> >Donn Starkey wrote:
> >>
> >> I make many of my telescope accessories from brass.  I often paint the
> >> interior of these brass eyepieces flat black.  However, when I comes to
> >> the threaded areas, paint causes the problem of adding to thread
> >> diameter and flaking off.  Some of the purchased brass optical products
> >> have a lovely flat black patina to them which does not appear to be a
> >> typical paint.  Ther most be some ways to either electro-coat or
> >> electro-deposit such a coating which could be accomplished in a small
> >> shop.  Does anyone know a method(s) for blackening brass which leaves a
> >> flat black finish?
> >>
> >> Donn Starkey
> >> dstarkey@solaris1.mysolution.com
> >Donn,
> >
> >    Lamp makers "leaded glass" use a blackener for brass to get an
> >antique affect and the longer you use it the darker it gets. You can
> >often find it "black patina" in a lamp making hobby store. It does use
> >dangerous chemicals so you do have to take care.
> >
> >Dick Strever A wannbe atm
> >
> >
> Del Stanton  - Burbank, California, USA (Near Los Angeles)
> 
> "sdl20@pacificnet.net"  (Lower case "SDL" followed by numeric "20")
> 
Dale I think you wanted this to goto Donn