[TheForge] RE: Putting some blue color in iron

Fri Mar 15 10:10:01 2002

Very Nice, T.
RW
----- Original Message -----
From: northwoods <[email protected]>
To: <[email protected]>
Sent: Friday, March 15, 2002 9:46 AM
Subject: Re: [TheForge] RE: Putting some blue color in iron


>
> Harry, I often use heat to blue my ML parts. It does help to have the
piece
> polished.  For a bright temper blue I use a torch to slowly and evenly
bring
> the piece up to 575 or so. As the piece goes through the color changes, I
> carefully apply heat where needed to provide an even color. When it gets
to
> bright purple you can often remove the heat and the piece will continue to
> change to a blue, and then bright blue, and then you have to quickly stop
it
> when it looks right by quenching. A more durable blue can be had by
soaking
> the piece at the temp. required to get the bright blue. You have to be
> careful not to exceed that temp. or the bright blue will change to a dull
> greyish blue.
> Another heat blue I use is a charcoal blue. This can be had by soaking the
> piece at a black red heat in charcoal for an hour or so. I don't know
> exactly what temperatures I am achieving when I do it, but would guess
> around 1000-1100 degrees. On the cooler end you will get a very nice
mottled
> blue/gray look, on the hotter end of a black red heat you will get a very
> fine mottled dark blue. This charcoal blue is a lot tougher than a temper
> blue. Here is a couple pics of a charcoal blue barrel on a rifle I built a
> couple months back.
>
> http://users.ez-net.com/~northwoods/DSCN0137.JPG
> http://users.ez-net.com/~northwoods/DSCN0142.JPG
> http://users.ez-net.com/~northwoods/DSCN0151.JPG
> http://users.ez-net.com/~northwoods/DSCN0138.JPG
>
> T. Clark
> Mountain, WI
>
>
>
>
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