[SEL] bolt/fastener finishes

[Tod Engine Foundation]

www.birchwoodcasey.com sells low temp black oxide kits.  That should be what 
you are looking for.

Rick

----- Original Message ----- 
From: <bill at antique-engines.com>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Wednesday, July 09, 2008 7:59 AM
Subject: [SEL] bolt/fastener finishes


> I've got a project going that has bolts, nuts and washers that aren't
> "zinc" or "galvanized". They are black. Best I can tell is they are zinc
> phosphate (not phosphate and oil)
> They actually held up as well as if not better than the silver plated
> bolts and nuts in the same areas.
> I'd like to get the SAME look - the flat black of the zinc-phosphate and
> not use the silver/zinc plated bolts.
> Some are special - flange nuts, thick washers, etc.
> Is there a way I can do this at home?
> Please don't suggest paint - paint chips when you wrench and adjust 
> things.
>
> I have a plating kit and the silver colored bolts and such that you can't
> get at a hardware store I use electrolysis, media blast, soak in Fast Etch
> (removes remaining rust and leaves a phosphate coating) then tin/zinc
> plate them. They turn out like new except for the roughness from rust
> pitting in areas.
>
> In short, looking for a good way to restore the flat black look of zinc
> phosphate bolt and nut and washer finishes.
>
> Bill
>
> (My next project - redo a maytag twin I have with black krinkle
> powdercoating!)
>
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