[ARC5] Heating screws to get a dark finish

Sun Sep 30 16:34:10 EDT 2012

I've done this with regular metal machine screws, but not SS screws. I simply put the screws in the oven for a half an hour or so,at 350 degrees.  The result is a nice toasty, brassy looking finish.No need to dip in water or heat it cherry red with a blow torch.73's,-Tom  KE4RHH
 > From: arc5-request at mailman.qth.net
> Subject: ARC5 Digest, Vol 104, Issue 35
> To: arc5 at mailman.qth.net
> Date: Sun, 30 Sep 2012 16:15:07 -0400
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> Today's Topics:
> 
>    1. Jumping from B-17 (Tim Sullivan)
>    2. Re: 3-48 binding head sizes in SCR-274N (Tim)
>    3. Re: 3-48 binding head sizes in SCR-274N (J. Forster)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sun, 30 Sep 2012 15:50:23 -0400
> From: "Tim Sullivan" <TimSullivan at ieee.org>
> Subject: [ARC5] Jumping from B-17
> To: <arc5 at mailman.qth.net>
> Message-ID: <8D1E9FCDA6984AD99BBE18560261B9B0 at ENGINEER>
> Content-Type: text/plain;	charset="iso-8859-1"
> 
> Made my first 2 jumps there at Orange MA, into the sand bowl target for students which you can see half of briefly in the video.
> 
> TimSullivan at ieee.org   LSM
> Sales at MagneCompInc.com
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Sun, 30 Sep 2012 13:02:29 -0700
> From: Tim <timsamm at gmail.com>
> Subject: Re: [ARC5] 3-48 binding head sizes in SCR-274N
> To: jfor at quikus.com
> Cc: arc5 at mailman.qth.net, Mike Hanz <aaf-radio-1 at aafradio.org>
> Message-ID:
> 	<CAG9SHKOQvgqZTAsOxhmXtiGnv+SR-hi-9Jxq3gq62hsT005C7Q at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> A friend advised me that taking a machine screw and heating it to a dull
> cherry red with a torch - then immediately dropping it in some motor oil
> will impart an immediate black oxide finish.  Not sure it will work with
> brass but worth a try.  He sent photos that showed it worked well...
> FYI
> Tim
> N6CC
> 
> On Sat, Sep 29, 2012 at 9:25 AM, J. Forster <jfor at quikus.com> wrote:
> 
> > The stainless are easy enough to find. I am looking for black finish. I'm
> > pretty much resigned to painting them after striking out repeatedly.
> >
> > Thanks,
> >
> > -John
> >
> > ==========
> >
> >
> >
> > > Gee...I dunno - this popped up within 25 seconds of searching:
> > > http://www.mcmaster.com/#95836A343
> > >
> > > McMaster must own a piece of UPS - their shipping rates are
> > > significantly lower than anyone else I order from.
> > >
> > > On 9/28/2012 2:22 PM, J. Forster wrote:
> > >> Well, I went to McMaster last night, looking for M4x0.7 in 15 or 16 mm
> > >> lengtth, black, pan head, Phillips. I'm still looking.
> > >>
> > >> -John
> > >
> > >
> >
> >
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> 
> ------------------------------
> 
> Message: 3
> Date: Sun, 30 Sep 2012 13:13:38 -0700 (PDT)
> From: "J. Forster" <jfor at quikus.com>
> Subject: Re: [ARC5] 3-48 binding head sizes in SCR-274N
> To: "Tim" <timsamm at gmail.com>
> Cc: arc5 at mailman.qth.net, Mike Hanz <aaf-radio-1 at aafradio.org>
> Message-ID: <51139.12.6.201.2.1349036018.squirrel at popaccts.quikus.com>
> Content-Type: text/plain;charset=iso-8859-1
> 
> Actually, it seems the answer is simpler.
> 
> McMaster has them in black, but their search 'bot does not find them..  at
> least when I tried. It'd find black sheet metal screws, but not bolts.
> 
> Thanks to Mike H. for pointing this out.
> 
> Best,
> 
> -John
> 
> ================
> 
> 
> > A friend advised me that taking a machine screw and heating it to a dull
> > cherry red with a torch - then immediately dropping it in some motor oil
> > will impart an immediate black oxide finish.  Not sure it will work with
> > brass but worth a try.  He sent photos that showed it worked well...
> > FYI
> > Tim
> > N6CC
> >
> > On Sat, Sep 29, 2012 at 9:25 AM, J. Forster <jfor at quikus.com> wrote:
> >
> >> The stainless are easy enough to find. I am looking for black finish.
> >> I'm
> >> pretty much resigned to painting them after striking out repeatedly.
> >>
> >> Thanks,
> >>
> >> -John
> >>
> >> ==========
> >>
> >>
> >>
> >> > Gee...I dunno - this popped up within 25 seconds of searching:
> >> > http://www.mcmaster.com/#95836A343
> >> >
> >> > McMaster must own a piece of UPS - their shipping rates are
> >> > significantly lower than anyone else I order from.
> >> >
> >> > On 9/28/2012 2:22 PM, J. Forster wrote:
> >> >> Well, I went to McMaster last night, looking for M4x0.7 in 15 or 16
> >> mm
> >> >> lengtth, black, pan head, Phillips. I'm still looking.
> >> >>
> >> >> -John
> >> >
> >> >
> >>
> >>
> >> ______________________________________________________________
> >> ARC5 mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/arc5
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:ARC5 at mailman.qth.net
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >>
> >
> 
> 
> 
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> End of ARC5 Digest, Vol 104, Issue 35
> *************************************