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**The Official Shoe Care Thread: Tutorials, Photos, etc.** - Page 792

post #11866 of 11875
Quote:
Originally Posted by gettoasty View Post

I wonder if people who wear their leather footwear sockless experience cracking.

I've seen linings crack and rot out when perspiration levels are high...socks or no socks. But I am convinced, it is the salt and/or the bacteria.
post #11867 of 11875
I've had cracked linings.
post #11868 of 11875

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post #11869 of 11875
Quote:
Originally Posted by sleepyinsanfran View Post

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Maybe on the outside but not in the folds inside. And FWIW, because of my work, I wash my hands only slightly less often than a surgeon.
post #11870 of 11875

^ yeah - realized that flaw immediately after posting :)  lack of exposure to particulate matter (silica dust, metal particulates in dust) is probably a big factor for wallets.

The suede issue is more complicated - might have something to do with the top grain being stiffer (in terms of low compressive strength, even with high tensile strength) than the roughout side. Another possibility is that of observability-bias: every hairline split on the surface of crust leather becomes prominently visible (even if the under the surface the leather is still alright/intact), while such minor cracks on the roughout side become blended with the nap. It might be a mix of both possibilities

post #11871 of 11875
DW, my guess is that the oils in your hand have helped preserve the leather. It gets handled a lot more than shoe leather.
Of course, it probably gets exposed to a lot less grit than your shoes. Some, but a lot less.
post #11872 of 11875
Empty, sebum that dries and oxidizes turns leather fibers very basic, which breaks hydrogen bonding of fatliquors applied at the tannery. Accumulated sweat and sebum isn't a good thing.
post #11873 of 11875
Interesting. You're the resident expert on such secretions, so I defer to you entirely.
post #11874 of 11875
Quote:
Originally Posted by sleepyinsanfran View Post

^ yeah - realized that flaw immediately after posting smile.gif  lack of exposure to particulate matter (silica dust, metal particulates in dust) is probably a big factor for wallets.
The suede issue is more complicated - might have something to do with the top grain being stiffer (in terms of low compressive strength, even with high tensile strength) than the roughout side. Another possibility is that of observability-bias: every hairline split on the surface of crust leather becomes prominently visible (even if the under the surface the leather is still alright/intact), while such minor cracks on the roughout side become blended with the nap. It might be a mix of both possibilities


Well, the grain is very short fibered and as you say not as resilient and compressible as the flesh. But on the face of it, the fleshside of the leather would seem to be more vulnerable to grit accumulating....except that in the absence of a grease or a wax there's little to hold that grit in place.

And I suspect it is that fact alone which makes the difference--carborundum grit sitting loose on paper is nowhere near as effective as when it is glued to the paper. The waxes and greases hold the grit in the creases and the "loaded" creases rub against each other.
post #11875 of 11875
Quote:
Originally Posted by emptym View Post

Interesting. You're the resident expert on such secretions, so I defer to you entirely.

Also as I mentioned to sleepy, any oils from my hands would be on the outside of my wallet. It's a trifold, and it folds up pretty close--tightly, as who should say. But I never touch the leather where the resulting creases are located.
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