Chinook II Discolored?

M

madfast

Joined
Oct 17, 2003
Messages
650
I just bought a Chinook II and noticed that the inside of the spyderhole is a maroon color, is that normal? my persian sure doesn't have that. did i get a lemon or is it something chinooks have?
 
Mines the same way.

I thought perhaps it was in the heat treat that it ocurred. I like it actually.

Brownie
 
brownie0486 said:
Mines the same way.

I thought perhaps it was in the heat treat that it ocurred. I like it actually.

Brownie
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Oh, ok! so i guess it's normal. when i first saw it i thought it was rust, but it didn't look like rust. just curious, anybody have any clue why it's like that?
 
Could be left over buffing compound. Niether of mine have it.
 
My Dodo has it and it's either from the hole-cutting step or the heat treat itself. Either one attains temperatures that would leave that color. It doesn't bother me.
 
Hi Madfast,

The maroon coloring is likely a combo of the heat treat and the heat from the laser cutter. It doesn't affect the performance on the blade's steel. Think of it this way.... if you’re ever in a crowd of Chinook carriers and you all take your knives out, you'll be able to tell which one is yours, rather comparable to a small beauty mark...LOL

Joyce @ Spyderco
 
Joyce Laituri said:
Hi Madfast,

The maroon coloring is likely a combo of the heat treat and the heat from the laser cutter. It doesn't affect the performance on the blade's steel. Think of it this way.... if you’re ever in a crowd of Chinook carriers and you all take your knives out, you'll be able to tell which one is yours, rather comparable to a small beauty mark...LOL

Joyce @ Spyderco
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Thanks for the reply! i guessed that it had to do with cutting the hole because it was on the inside only. it's kinda cool now that i think about it
;)
 
If it's marroon in color and it's not rouge, it's rust. Oxidized iron is red. My spyders get discolored in the hole, it looks reddish and comes off with flitz, just like rust. I've never received a new spyder with rust in the hole.
 
brownshoe said:
If it's marroon in color and it's not rouge, it's rust. Oxidized iron is red. My spyders get discolored in the hole, it looks reddish and comes off with flitz, just like rust. I've never received a new spyder with rust in the hole.
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Actually,it is neither rouge or rust.Some of mine have it and some don't.Some are more noticable,than others.I have cleaned with brass barrel brush and solvents and does not seems to affect the discoloration.This leads me to believe that it goes deeper than the very top surface.If it is that bothersome to some,you may try lightly sanding and polishing the hole.That may or may not do the trick.Depends how deep the heat discoloration goes.I
personally wouldn't bother to be to anal about it.


p.s. By the way my discoloration is more light red or orange in color.
 
TOMBSTONE said:
Actually,it is neither rouge or rust.Some of mine have it and some don't.Some are more noticable,than others.I have cleaned with brass barrel brush and solvents and does not seems to affect the discoloration.This leads me to believe that it goes deeper than the very top surface.If it is that bothersome to some,you may try lightly sanding and polishing the hole.That may or may not do the trick.Depends how deep the heat discoloration goes.I
personally wouldn't bother to be to anal about it.


p.s. By the way my discoloration is more light red or orange in color.
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Never Mind I'm a schmuck :rolleyes:
After,thinking about brownshoes post I did what he said.I got out my Flitz and it seems to be coming off.It has the right amount of abrasive and polishing qualities to be very effective.Now I don't know why I didn't think to try that first,knowing usually how effective Flitz is when I've used it on other knives.Well Thanks brownshoe,it is doing the trick.
 
One word of caution.I just finished my Flitz treatment.I was useing finger wrapped with gun cleaning rag with polish technique.After I was done I noticed my finger was bleeding.The hole may give you a paper type cut with forcing your finger tight in the hole and twisting it around inside the hole numerous times.The hole is not jagged on my Chinooks,but this small slice can be inflicted, just fyi.
 
I have the same with my Meerkat, the inside of the hole is slightly brown/copper coloured. Never had any problems with it.

Shiden
 
That happens when you heat treat steel. We custom make a lot of our dies where I work out of D2 and harden them to 60-62 HRC. Sometimes the guys in the heat treat area are lazy and give them to me straight out of the oven and they are the brown/red/purple/grey color. It's sort of hard to describe, but hose of you who have it know what I'm talking about. All I do is chuck them up in the lathe and polish the outside lightly. The coloing is no more than a few thousands deep.

Like others said, don't worry about it.
 
Technically speaking, anodizing is a very different process that has little to do with heat. Anodizing is a chemical bonding process usually applied when the metal object is immersed in the proper liquid and a specified voltage is applied to the object and the container.

The colors that come from heat treating steel or laser-cutting are also chemical in nature, but are the result of reaction with air or the gas that the part is soaked in during the process. It doesn't sound that different, but it is really is.
 
I haven't seen that color on any of my Spydies. However, I've seen what I think is the same maroon color on other steel parts. It's a reddish-brown with hints of purple in it. It's a very smooth color. People have told me before that it's a product of the heat-treat.

Rust is grey to brown to black in color, sometimes with blue in it, or a bright orange/red. It's not a smooth, even coloring; it appears in splotches or streaks that seem to be made of little pepper-like dots.
 
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