Glue Turning Orange?

[eljimmy]

So this is a first for me. Has anyone ever had this happen to your corncob pipe? Hard to really get a clear picture but my guess is this is glue residue, but I've never seen it turn orange.

 

[mortonbriar]

From here it just looks like the cut end of the cob stem...

 

[eljimmy]

From here it just looks like the cut end of the cob stem...

You are right. But all has darkened but that part. Pretty odd

 

[mortonbriar]

I think I have noticed something similar on 10+ cobs over the years, and once that little 'gap' at the bottom fills up with cake, and the whole bottom rounds out then it is no longer noticeable.