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Posted by Roger Shoaf on April 12, 2008, 1:06 am
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> > Well, I thought I explained that. I can't seem to find a #6x3/4" truss-
> > head in anything but ss. The geometry is critical to function, so I
> > can't deviate far from what I'm using now. Also, bronze I can maybe
> > see (I'm no metallurgist), but is there really any brass alloy that is
> > close to 18-8 SS in strength? That flies in the face of my instincts
> > and experience!
> > Maybe I'm wrong...
> > Robobass
>
If you need strength, avoid 6-32 screws. This thread is bad because too
much of the diameter of the screw is lost with such a course thread.
> Have you considered plating the parts yourself? Look here-
> http://www.caswellplating.com/kits/index.html and you might find
> something you can plate your SS screws with to match your needs
On plating, I think zinc chromate gives you a nice brassy color (Think
Japanese car parts.).
--
Roger Shoaf
If you are not part of the solution, you are not dissolved in the solvent.
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Posted by Don Foreman on April 12, 2008, 6:53 pm
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On Fri, 11 Apr 2008 22:06:41 -0700, "Roger Shoaf"
>
>> > Well, I thought I explained that. I can't seem to find a #6x3/4" truss-
>> > head in anything but ss. The geometry is critical to function, so I
>> > can't deviate far from what I'm using now. Also, bronze I can maybe
>> > see (I'm no metallurgist), but is there really any brass alloy that is
>> > close to 18-8 SS in strength? That flies in the face of my instincts
>> > and experience!
>> > Maybe I'm wrong...
>> > Robobass
>>
>
>If you need strength, avoid 6-32 screws. This thread is bad because too
>much of the diameter of the screw is lost with such a course thread.
>
>> Have you considered plating the parts yourself? Look here-
>> http://www.caswellplating.com/kits/index.html and you might find
>> something you can plate your SS screws with to match your needs
>
>On plating, I think zinc chromate gives you a nice brassy color (Think
>Japanese car parts.).
Zinc chromate typically goes on zinc, not on stainless. If the screws
in question are available as bright zinc on steel, it's very easy to
chromate them so they look a lot like brass. It's just a dunk in some
juice for a few minutes. The juice is available from Caswell.
6-32 x 3/4 zinc-plated truss head screws are available from
http://www.boltdepot.com/product.aspx?cc=10&cs=26&cm=7&cd=393
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Posted by lostfrom68jay@googlemail.com on April 13, 2008, 7:21 am
Please log in for more thread options Sorry I was unclear. The screw is a truss head sheet metal screw #6 x
3/4" 18-8ss. I've been searching a long time, and never found it in
gold color. I will try the heat idea. I've got a butane mini torch.
But, won't it loose strength if I heat it that much? It really needs
to be fairly strong. I did have a plating rig years ago. Maybe I'll
get another one. Trouble is, I'm in Germany now. You can't just go out
and buy toxic chemicals the way you can in the US. (I bet it's getting
harder there too. I've heard of high school science teachers being
arrested for trying to order stuff to do classroom experiments that
they had been doing for decades!)
Robobass
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Posted by Martin H. Eastburn on April 9, 2008, 11:27 pm
Please log in for more thread options You could have the Stainless you want gold color - color treated by heat.
Standard colors are a bronze color.
Martin
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/
lostfrom68jay@googlemail.com wrote:
> On Apr 10, 12:43 am, wfhabic...@hotmail.com wrote:
>> On Apr 9, 6:36 pm, "lostfrom68...@googlemail.com"
>>
>>> I have a cottage business (www.basscapos.com). I use a truss-head 18-8
>>> SS screw with the project, and spraypaint it gold to try to match the
>>> brass part it fastens. This is weak, I know, but I just can't find any
>>> gold-colored screw that is suitable, and strength is an issue. Does
>>> anyone know of a plating shop that would be well suited to doing a run
>>> of like 500 pieces?
>>> Robobass
>> How about using brass or bronze screws?
>>
>> In the proper alloy they can be as strong as 18-8 screws.
>>
>> Wolfgang
>
> Well, I thought I explained that. I can't seem to find a #6x3/4" truss-
> head in anything but ss. The geometry is critical to function, so I
> can't deviate far from what I'm using now. Also, bronze I can maybe
> see (I'm no metallurgist), but is there really any brass alloy that is
> close to 18-8 SS in strength? That flies in the face of my instincts
> and experience!
> Maybe I'm wrong...
> Robobass
----== Posted via Pronews.Com - Unlimited-Unrestricted-Secure Usenet News==----
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Posted by on April 10, 2008, 10:37 am
Please log in for more thread options wrote:
> You could have the Stainless you want gold color - color treated by heat.
> Standard colors are a bronze color.
>
> Martin
> Martin H. Eastburn
> @ home at Lions' Lair with our computer lionslair at consolidated dot net
> TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
> NRA Second Amendment Task Force Charter Founder
> IHMSA and NRA Metallic Silhouette maker & member.http://lufkinced.com/
>
>
>
> lostfrom68...@googlemail.com wrote:
> > On Apr 10, 12:43 am, wfhabic...@hotmail.com wrote:
> >> On Apr 9, 6:36 pm, "lostfrom68...@googlemail.com"
>
> >>> I have a cottage business (www.basscapos.com). I use a truss-head 18-8
> >>> SS screw with the project, and spraypaint it gold to try to match the
> >>> brass part it fastens. This is weak, I know, but I just can't find any
> >>> gold-colored screw that is suitable, and strength is an issue. Does
> >>> anyone know of a plating shop that would be well suited to doing a run
> >>> of like 500 pieces?
> >>> Robobass
> >> How about using brass or bronze screws?
>
> >> In the proper alloy they can be as strong as 18-8 screws.
>
> >> Wolfgang
>
> > Well, I thought I explained that. I can't seem to find a #6x3/4" truss-
> > head in anything but ss. The geometry is critical to function, so I
> > can't deviate far from what I'm using now. Also, bronze I can maybe
> > see (I'm no metallurgist), but is there really any brass alloy that is
> > close to 18-8 SS in strength? That flies in the face of my instincts
> > and experience!
> > Maybe I'm wrong...
> > Robobass
>
> ----== Posted via Pronews.Com - Unlimited-Unrestricted-Secure Usenet
News==----http://www.pronews.comThe #1 Newsgroup Service in the World! >100,000
Newsgroups
> ---= - Total Privacy via Encryption =---
Hadn't thought of that... And the user can try this out himself with
a propane or MAPP gas torch. Nice.
Wolfgang
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> > head in anything but ss. The geometry is critical to function, so I
> > can't deviate far from what I'm using now. Also, bronze I can maybe
> > see (I'm no metallurgist), but is there really any brass alloy that is
> > close to 18-8 SS in strength? That flies in the face of my instincts
> > and experience!
> > Maybe I'm wrong...
> > Robobass