Zing

[Stevem]

Zing, purr, purr Zing.

Ah the sound of a circle mill cutting through two nails in the only place on the log that wasn't scanned.

Grr, slap, slap, ##!!##, the sound of the sawyer hitting his forehead with his hand because he recognized the sound after seeing what he thought might be iron stain and knows he can't get the blade loose with the tools he has to change the blade.

Maybe it's a law of nature about metal being where you don't think it should be.  On a jet flight line they call it FOD, foreign object damage.

But I did find two monster (40+" on the stump?) black walnut trees on the way home that have been laid down because of rot and the owners are talking about making furniture out of the wood.  Might have been a good day. 

[Frank Pender - AKA "Tail Gunner"]

Did you hit the nails in the Silverton log?

[Stevem]

I did,  two cut in half, one turned the head flush with the open face and lost all teeth on the blade that wasn't cutting right to begin with.  New blade cut better than the ruined one when it had it's teeth. 
We figured the nails were put in 40 years ago.  Nails were over 8" deep.  The arborest is going to save the nails as a show and tell of why not to nail things to trees. 
Iron stains black walnut a very dark color and that stain ran 6' up the tree in stripes.  Pretty grain patter, expensive way to get it.
 

[Kirk Allen]

If I never do another FOD walk it will be too soon! 

12 years at Elmendorf AFB in Anchorage, my home away from home! 

[Stevem]

I guess that makes them Silverton Nails

[joasis]

The last set of carbide teeth I put in my blade have 4 or 5 chipped from small nails....but I have to admit, they are tough. Nail stains in cedar are black...and usually hold to a a foot or less of streak.

[Kirk Allen]

Well I guess I have figured out the similarity to a cirlce mill and a band mill. 

The sound they both make when hitting metal